From CTARG@Levels.UniSA.Edu.Au Tue Feb 1 02:46:08 1994 Received: from Levels.UniSA.Edu.Au for CTARG@Levels.UniSA.Edu.Au by www.ccl.net (8.6.4/930601.1506) id BAA14304; Tue, 1 Feb 1994 01:55:06 -0500 From: Received: from Levels.UniSA.Edu.Au by Levels.UniSA.Edu.Au (PMDF V4.2-15 #4523) id <01H8DNW0FIE89BWZ6D@Levels.UniSA.Edu.Au>; Tue, 1 Feb 1994 17:24:43 +1030 Date: Tue, 01 Feb 1994 17:24:43 +1030 Subject: EQ3/EQ6 water speciation equilibria To: chemistry@ccl.net Message-id: <01H8DNW0G1OI9BWZ6D@Levels.UniSA.Edu.Au> X-Envelope-to: chemistry@ccl.net X-VMS-To: IN%"chemistry@ccl.net" MIME-version: 1.0 Content-type: TEXT/PLAIN; CHARSET=US-ASCII Content-transfer-encoding: 7BIT Dear Netters, I have recently been given a computer package (EQ3 and EQ6) to calculate species equilibria in water. I only recieved the tape and know nothing of its origins. Also I have no documentation and the programs on the tape are not compiled and I don't know how to go about doing this correctly. Has anybody heard of these packages? Andrea G. From herbert.homeier@rchs1.chemie.uni-regensburg.de Tue Feb 1 05:46:09 1994 Received: from rrzs1.rz.uni-regensburg.de for herbert.homeier@rchs1.chemie.uni-regensburg.de by www.ccl.net (8.6.4/930601.1506) id FAA15052; Tue, 1 Feb 1994 05:28:09 -0500 Received: from rchs1.chemie.uni-regensburg.de by rrzs1.rz.uni-regensburg.de (4.1/URRZ-relay (1.4)) id AA17573; Tue, 1 Feb 94 11:25:27 +0100 Received: by rchs1.chemie.uni-regensburg.de (4.1/URRZ-sub (1.31)) id AA01360; Tue, 1 Feb 94 11:25:30 +0100 Date: Tue, 1 Feb 94 11:25:30 +0100 From: Herbert Homeier (t4720) Message-Id: <9402011025.AA01360@rchs1.chemie.uni-regensburg.de> To: CHEMISTRY@ccl.net Subject: Matrix diagonalization, dense and sparse Cc: edelman@math.mit.edu Reply-To: edelman@math.mit.edu Hello, The following is from the Numerical Analysis Digest, Vol. 94, No. 5. There should be some interest of computational chemists reading the CCL for this topic, I guess. Herbert Homeier ---- Dr. H. Homeier Institut fuer Physikalische und Theoretische Chemie Universitaet Regensburg D-93040 Regensburg Germany Phone: +49-941-943 4720 FAX : +49-941-943 2305 email: homeier@rchs1.chemie.uni-regensburg.de (preferred) homeier@vax1.rz.uni-regensburg.d400.de ---- From: Alan Edelman Date: Mon, 24 Jan 94 21:40:58 EST Subject: Large Linear Algebra Survey THE LARGE NUMERICAL LINEAR ALGEBRA SURVEY Many of you may be familiar with my series of surveys designed to assess users' needs and give perspective on the state of computing. I have learned that such surveys are difficult because computational scientists come from so many different fields. I annually read many technical papers outside of my field of specialty -- each with its own jargon. Though this is time consuming, I think the information gathered has proved quite valuable. My last survey may be found in the Journal of Supercomputer Applications, 7 (1993), 113-128. This year I would like to ask about both sparse and dense problems. ^^^^^^ ^^^^^ 1) Has the world yet seen the solution of a 100,000 x 100,000 dense linear system? 2) Has the world yet seen the computation of some or all eigenvalues or eigenvectors of a dense symmetric 30,000 x 30,000 matrix? 3) Has the world yet seen the computation of some or all eigenvalues or eigenvectors of a dense non-symmetric 10,000 x 10,000 matrix? A) I would like to hear about any solutions to an n x n system of equations where n > 10,000 for dense problems, or n > 100,000 for sparse problems. I would like to know what is your solution method, where the problem arises, and references to your papers and also an elementary paper or text on the subject. Also, I would like to know about the time and accuracy of your solution. B) I would like to hear about eigenvalue problems, again with n>10,000 for dense problems, or n>100,000 for sparse problems. Please answer the same questions as in A. c) If you have a large problem, how would your work be influenced if we could solve problems 100 times as large in the same amount of time? Thanks for your cooperation. This survey seems to have a wide readership and your work will be duly noted. If you have participated before, I look forward to your updates. If not, I look forward to hearing from you. Thanks again Alan Edelman Dept of Mathematics MIT 2-380 Cambridge, MA 02139 edelman@math.mit.edu From nduic@x400.srce.hr Tue Feb 1 06:46:20 1994 Received: from kanin.arnes.si for nduic@x400.srce.hr by www.ccl.net (8.6.4/930601.1506) id GAA15396; Tue, 1 Feb 1994 06:31:41 -0500 X400-Received: by mta kanin.arnes.si in /PRMD=ac/ADMD=mail/C=si/; Relayed; Tue, 1 Feb 1994 12:25:52 +0100 X400-Received: by /PRMD=carnet/ADMD=cro400/C=hr/; Relayed; Tue, 1 Feb 1994 12:22:18 +0100 Date: Tue, 1 Feb 1994 12:22:18 +0100 X400-Originator: nduic@x400.srce.hr X400-Recipients: CHEMISTRY@ccl.net X400-MTS-Identifier: [/PRMD=carnet/ADMD=cro400/C=hr/;940201122218] X400-Content-Type: P2-1984 (2) Content-Identifier: 220 Conversion: Prohibited From: Neven Duic Message-ID: <220*/S=nduic/OU=x400/O=srce/PRMD=carnet/ADMD=cro400/C=hr/@MHS> To: CHEMISTRY@ccl.net Subject: Physical chemistry list Dear Netters, Does anyone knows any physical chemistry list like this one? I would especially be interested in one dealing with reaction kinetics. Faithfully Yours Neven Duic nduic@x400.srce.hr nduic@uni-zg.ac.mail.yu From herbert.homeier@rchs1.chemie.uni-regensburg.de Tue Feb 1 07:46:10 1994 Received: from rrzs1.rz.uni-regensburg.de for herbert.homeier@rchs1.chemie.uni-regensburg.de by www.ccl.net (8.6.4/930601.1506) id GAA15640; Tue, 1 Feb 1994 06:52:03 -0500 Received: from rchs1.chemie.uni-regensburg.de by rrzs1.rz.uni-regensburg.de (4.1/URRZ-relay (1.4)) id AA18458; Tue, 1 Feb 94 12:51:02 +0100 Received: by rchs1.chemie.uni-regensburg.de (4.1/URRZ-sub (1.31)) id AA01870; Tue, 1 Feb 94 12:51:02 +0100 Date: Tue, 1 Feb 94 12:51:02 +0100 From: Herbert Homeier (t4720) Message-Id: <9402011151.AA01870@rchs1.chemie.uni-regensburg.de> To: CHEMISTRY@ccl.net, ysn@zoyd.ee.washington.edu Subject: NSF Sponsered Positions in Theoretical Atomi Cc: c5008@ccl.net In article FF5@murdoch.acc.Virginia.EDU, shree@willow.cse.ucsc.edu (Shree N. Murthy) writes: > > > NSF SPONSORED POSITIONS IN THEORETICAL ATOMIC PHYSICS AT IIT-MADRAS > ^^^ ^^^^^^^^^ ^^^^^^^^^ ^^ ^^^^^^^^^^^ ^^^^^^ ^^^^^^^ ^^ ^^^ ^^^^^^ > Applications are invited for 2 positions available under the NSF > sponsored research project entitled "IONIZATION OF ATOMS BY > ELECTROMAGNETIC RADIATION AND CHARGED PARTICLES, award in Indian > Currency" under the direction of P.C.Deshmukh (Department of Physics, > Indian Institute of Technology, Madras - 600 036, India) and > S.T.Manson (Department of Physics and Astronomy, Georgia State > University, Atlanta, 30303, USA). The project will involve the study > of atomic photoabsorption and charged particle collision processes and > will involve furthering skills in relativistic quantum theory / many > body methods / quantum collision theory / and computational methods in > atomic physics. The positions will initially be offered for one year > and are extendable upto 3 years under this project. > > The positions available are: > > (1) Senior Project Officer (Grade II). > > This is a post-doctoral position and the applicant is expected to > have an excellent academic career, research experience in > theoretical physics, working knowledge of relativistic / many-body / > scattering theory methods, and experience with computational > techniques. > > (2) Junior Research Fellow. > > The applicant for this position must have an M.Sc. degree in Physics > and an excellent academic career. The selected candidate will have > the opportunity to register for a Ph.D. program at IIT after meeting > some additional requirements (eg. satisfactory GATE/CSIR/UGC score). > > Applications must be sent to the undersigned before February 15, 1994. > ^^^^^^^^ ^^ ^^^^ > Applications must include the applicant's brief curriculum vitae and a > clear indication of the earliest date on which the applicant can join. > > The applicants are requested to have a letter of reference sent > directly to the undersigned by two of the applicant's referees. > > P.C.Deshmukh > Department of Physics, > Indian Institute of Technology, > Madras - 600 036, India. > > NOTE: Only BRIEF INQUIRIES & ADVANCE APPLICATIONS can be received > on the e-mail or FAX. Actual, formal applications must come by post! > ^^^^ > e-mail : phy1!deshmukh%iitm@sangam.ernet.in > FAX : (44) + 235 0509. > PHONE : (44) + 235 1365 * 3222 / 3201. > > > ----------------- Herbert.Homeier@rchs1.chemie.uni-regensburg.de From young@slater.cem.msu.edu Tue Feb 1 08:47:35 1994 Received: from msu.edu for young@slater.cem.msu.edu by www.ccl.net (8.6.4/930601.1506) id IAA16630; Tue, 1 Feb 1994 08:44:15 -0500 Received: from slater.cem.msu.edu by msu.edu (IBM VM SMTP V2R2) with TCP; Tue, 01 Feb 94 08:44:28 EST Received: by slater.cem.msu.edu (920330.SGI/911001.SGI) for @msu.edu:chemistry@ccl.net id AA21032; Tue, 1 Feb 94 08:45:07 -0500 Date: Tue, 1 Feb 94 08:45:07 -0500 From: young@slater.cem.msu.edu (Dave Young) Message-Id: <9402011345.AA21032@slater.cem.msu.edu> To: chemistry@ccl.net Subject: Summary of Gaussian quirks Hi, Here is the summary of messages received about Gaussian quirks. The original posing was ******************************************************************* >Hi, > > I'm sure many of the subscribers to this list are fluent users >of the Gaussian XX programs. Although these are wonderful programs, >the number of revsions and authors has created a number of places >where the manual is either wrong or too vague. > > I don't mean to offend the authors. I couldn't keep on top >of that volume of code either. > > However, my question is this does anyone have a compilation >of the various work arounds for these quirks? Following are two >that I have found. > >1. In order to request a tighter convergence criteria, the command >"conv=7" for 10**-7 convergence doesn't work in our version, but the >command "iop(5/6=7)" will have the same result. > >2. When doing a CISD calculation, the command "pop=no" does not give >a complete set of natural orbitals with occupation numbers. (By complete >set, I desire all orbitals with non-zero occupations.) However, if >you are creating a cube file from a CI calculation and have the >commands "pop=no density=ci cubedensity=density" THEN you get the >natural orbitals. > > Please send comments directly to me young@slater.cem.msu.edu >and I will summarize for the list. Replys are ********************************************************************** From: rossi@t1.chem.umn.edu (Ivan Rossi) Dear Dave, I don`t know what version of gaussian you have, but on my g92 rev b this command work both with scf and casscf : scf=(conv=7) that is equivalent to the iop(5/6=7) you reported. I don`t use ci so i can't be helpful for the other case good luck Ivan Ivan Rossi, Ph.D. | Department of Chemistry | EXPERT : (n) University of Minnesota | someone who avoids all the 207 Pleasant St. SE,Minneapolis, MN 55455 | little errors, going straight Tel. 612-624-6099 | towards the catastrophe e-mail : rossi@t1.chem.umn.edu | ******************************************************************** From: rbw@msc.edu (Richard Walsh) Dave, The one that I would like to point out is the description of the assignment of additional basis functions to atoms using the MASSAGE key word. The manual indicates that one should use the 'Center number' on page 78. The output uses the center number inconsistently and if you have a system with dummy atoms watch out because the output marks them as 'centers'. If you do not get things exactly right you may end up with d-orbitals on hydrogen atoms! Anyway the best way to avoid this problem is to count real atoms only and use the GFPRINT key word to confirm that you got what you wanted. I reported this to Doug Fox and he seemed to take an interest, but a fix was not in the most recent release of the manual. I think that to some extent they are relying on the availability of the new book to compensate for what is lacking in the manuals. Richard Walsh Minnesota Supercomputer Center Chemistry Applications **************************************************************** From: FOX@cmchem.chem.cmu.edu Dr. Young, Your first quirk is exactly as you describe, additional options were added which make CONV no longer unique. You need to use CONVER for post-HF and SCF=CONVER=n for SCF convergence. Your second quirk is one I don't recognize. I tried to duplicate it here and did not find a difficulty. Can you send an input which shows the difficulty to help@gaussian.com In general we stand ready to address questions/problems you have with Gaussian at that address. Doug Fox Director of Technical Support ********************************************************************* From: FOX@cmchem.chem.cmu.edu Dr. Young, For the largest part we have been able to correct the code to back up the manual so most of the quirks are taken care of. One feature which is commonly missed is that you can only specify a keyword once on the route card, i.e. # MP2/6-31G* MP2=Stingy will produce an MP4 calculation instead of MP2. On the density question I now understand the confusion. The CI is not formed by default for a CISD energy calculation. This requires an additional step to solve coupled perturbed equations and applies to any of the post-HF methods which can produce a gradient, MP2, QCISD, CIS etc. This step can be fairly costly if all you require is the energy so the default is to analyze the HF density unless you include the DENSITY keyword. Thus the NO analysis in you first case is of the HF density and the NO's have the all or nothing population you observed. In the second case you have truly analyzed the CI density. My general recommendation is to use DENSITY or DENSITY=CURRENT which selects the DENSITY of your energy keyword, if it is available, rather than using DENSITY=CI which would fail if you did an MP2 for example. You could also consider adding DENSITY=CURRENT into the Default.Route file on your system if you always want to produce the density. Doug Fox help@gaussian.com Dave Young young@slater.cem.msu.edu youngdc@msucem From herbert.homeier@rchs1.chemie.uni-regensburg.de Tue Feb 1 09:46:12 1994 Received: from rrzs1.rz.uni-regensburg.de for herbert.homeier@rchs1.chemie.uni-regensburg.de by www.ccl.net (8.6.4/930601.1506) id JAA17206; Tue, 1 Feb 1994 09:42:07 -0500 Received: from rchs1.chemie.uni-regensburg.de by rrzs1.rz.uni-regensburg.de (4.1/URRZ-relay (1.4)) id AA19862; Tue, 1 Feb 94 15:40:42 +0100 Received: by rchs1.chemie.uni-regensburg.de (4.1/URRZ-sub (1.31)) id AA02386; Tue, 1 Feb 94 15:40:45 +0100 Date: Tue, 1 Feb 94 15:40:45 +0100 From: Herbert Homeier (t4720) Message-Id: <9402011440.AA02386@rchs1.chemie.uni-regensburg.de> To: CHEMISTRY@ccl.net, ysn@zoyd.ee.washington.edu Subject: faculty positions at Duke Cc: carla@cs.duke.edu **crossposted to computational chemistry list and young scientists network.** **by Herbert.Homeier@rchs1.chemie.uni-regensburg.de In article 2i9q6cINNpkp@YOGI.NA.CS.YALE.EDU, carla@cs.duke.edu (Carla Ellis) writes: > > > > DUKE UNIVERSITY > Department of Computer Science > > We invite applications for three tenure-track or tenured faculty positions in > computer science starting September 1994. > > Two positions are available at various ranks > (assistant, associate, or full professor) in the area of > EXPERIMENTAL SYSTEMS, > and one position is available at the rank of assistant professor > preferably in the area of SCIENTIFIC COMPUTING. > > Areas of primary interest in experimental systems include > operating systems, computer architecture and digital systems design, > high-speed networks, software design environments and engineering, > parallel processing, databases and object-oriented technology, > multimedia, graphics and algorithm animation, and > compilers. > > Areas of primary interest in scientific computing include > numerical algorithms and analysis (e.g., nonlinear methods, multigrid > techniques, domain decomposition, adaptive algorithms, inverse problems), > large-scale computation, scientific visualization, scientific databases and > digital libraries, and application-specific computing (e.g., environmental > computing, biomedical computing). > > Exceptional candidates in all areas of computer science will be considered. > > The Department has major research efforts and funding in the areas of > systems, algorithms & complexity, scientific computing, and artificial > intelligence. Facilities include a CM-5 parallel computer, over 100 graphics > workstations, and access to a variety of supercomputers through MCNC in > nearby Research Triangle Park. The Department will relocate in Summer 1994 > into spacious new quarters in the $70 million Levine Science Research Center > now nearing completion. The Durham area in North Carolina, rated as one of > the five best places to live in the U.S., offers a wide variety of > professional, cultural, and recreational attractions. > > Applications should include a curriculum vitae, a list of publications, > copies of the most important publications, and a list of references. > A Ph.D. in computer science or related area is required. Applications > should be sent by February 15, 1994 to > > Professor Jeffrey S. Vitter, Chair > Department of Computer Science > Duke University > Durham, NC 27708-0129 > > Duke University is an affirmative action, equal opportunity employer. > > ----------------- Herbert.Homeier@rchs1.chemie.uni-regensburg.de From jkl@ccl.net Tue Feb 1 16:51:08 1994 Received: from krakow.ccl.net for jkl@ccl.net by www.ccl.net (8.6.4/930601.1506) id QAA27436; Tue, 1 Feb 1994 16:50:56 -0500 From: Jan Labanowski Received: from localhost for jkl@ccl.net by krakow.ccl.net (8.6.4/920428.1525) id QAA07418; Tue, 1 Feb 1994 16:50:54 -0500 Date: Tue, 1 Feb 1994 16:50:54 -0500 Message-Id: <199402012150.QAA07418@krakow.ccl.net> To: chemistry@ccl.net Subject: Any takers for Density Functional Theory Book Forwarding: Mail from 'Jan Labanowski ' dated: Tue, 1 Feb 1994 16:40:53 -0500 Cc: jkl@ccl.net Dear Netters, I am getting questions about the book which I coedited with Jan Andzelm: Density Functional Methods in Chemistry (Eds. Jan Labanowski, Jan Andzelm) Springer-Verlag, New York, 1991 like every other week. The book is out of print. No more books in even the more obscure book warehouses. My question is... Should I talk to Springer-Verlag and encourage them to do a reprint? If so, how big is the interest in this book? To repell accusiations that I am greedy: I did not take a penny for editing the book then, and will not take a penny for it now, if it is reprinted. Now, if you see that it is still needed and is not terribly out of date, maybe, there will be a chance to encourage Springer-Verlag to reprint it. So please, send me your vote: Would you buy, or recommend for your library to buy the book, if it was available? Your vote is noncommitting, of course. I will keep your responses in strict confidence and delete them in about a week. I just need to see if there is an interest in the book. Jan Labanowski jkl@ccl.net From bross@shell.portal.com Tue Feb 1 16:05:16 1994 Received: from nova.unix.portal.com for bross@shell.portal.com by www.ccl.net (8.6.4/930601.1506) id QAA26710; Tue, 1 Feb 1994 16:05:15 -0500 Received: from jobe.shell.portal.com (jobe.shell.portal.com [156.151.1.104]) by nova.unix.portal.com (8.6.4/8.6.4-1.13) with ESMTP id NAA27404 for ; Tue, 1 Feb 1994 13:06:01 -0800 Received: from localhost (bross@localhost) by jobe.shell.portal.com (8.6.4/8.6.4) id NAA08003 for chemistry@ccl.net; Tue, 1 Feb 1994 13:06:00 -0800 Date: Tue, 1 Feb 1994 13:06:00 -0800 From: Wilson S Ross Message-Id: <199402012106.NAA08003@jobe.shell.portal.com> To: chemistry@ccl.net Subject: hyper journals Status: RO Rainer Stumpe of Springer-Verlag: > > ... Hypertext links > would allow me to access previous volumes at the click with my > mouse, if I wanted to. The journals I would browse had true- > color images, would provide video sequences when time dependent > phenomena need to be visualized, and audio signals where > appropriate. THAT TECHNOLOGY IS THERE, TOO. I do not think I > would browse and read a journal if I had to retrieve, > decompress and files to reassemble an article; Sounds like World-Wide Web, which transparently handles everything. > While the technology is there - as there are freeware programs > mentioned by Dr. Seibel - I wonder how widespread it is. Maybe > I can use it later this year in a pilot project Springer-Verlag > is setting up. But can you? If you want to ftp xmosaic for free from NCSA and connect to World-Wide Web. All you need is a Unix/X machine, a PC or a Mac on the Internet, I believe. This does not cover everyone yet, but probably covers sufficient computational chemists to get off the ground. > What would happen, if I switched all my journals to that new > technology? I for one might begin to use them more. I'm tired of lugging things around in the library. > Wouldn't they just disappear from lack of > submission (the ambitious e-journal Current Clinical Trials > apparently is suffering from technologically negligent > authors). Am I correctly assuming, scientists publish to be > read and cited? Or do they publish to support advanced > technology? As soon as I can, I will publish electronically. So there's one vote! Bill Ross From 100012.1163@CompuServe.COM Tue Feb 1 16:45:49 1994 Received: from dub-img-2.compuserve.com for 100012.1163@CompuServe.COM by www.ccl.net (8.6.4/930601.1506) id QAA27278; Tue, 1 Feb 1994 16:45:47 -0500 Received: from localhost by dub-img-2.compuserve.com (8.6.4/5.930129sam) id QAA25412; Tue, 1 Feb 1994 16:45:17 -0500 Date: 01 Feb 94 15:14:41 EST From: "Rainer Stumpe 100012,1163" <100012.1163@CompuServe.COM> To: Subject: Electronic Publishing Message-ID: <940201201440_100012.1163_BHB75-1@CompuServe.COM> Status: RO To: >internet:chemistry@ccl.net >From 100012.1163@compuserve.com Rainer Stumpe Subj: Re: Electronic Publishing Dear Fellow Netters, I received a couple of messages on the subject to my private mail box. I will answer publicly, however, and more generally. No, I do not have access to WWW nor do I use Mosaic. It is now only a few months that we have direct access to Internet. It took years of discussions with the operating organizations to get that access (there was a lot of suspicion that we would misuse public information media for commercial purposes). Yes, we have an obsolete main frame in-house computer system. There are only few high-tech workstations available to the Springer staff. It is not so much the cost for such equipment, it is a problem of training people. Our employes have to work for products that we can sell and earn their salaries. One can expect learning to master new systems in their free time only from a few, but they are there, others will follow. Can e-publishing lower the cost of information? Well, should it? Publishing is an economic factor (scientific publishing is only a fraction of the total value of publications). There are more than just publishers, who earn their living in the industry: paper mills, typesetters, printers, mail services, book sellers, journal agents, librarians, etc. If you think about it, e-publishing will also feed many people: system developers, communication line vendors, computer operators, sysops, archivars, reformatters, etc. All what e-publishing will do is shift the number of people working in an established industry to an emerging industry. By making a job description obsolete (e.g. the typesetter or the mailman who delivers your favorite scientific journal) does not decrease the number of mouths to feed! So, I do not believe information will become less expensive in the end. We at Springer think at a global and unified scale. We feel obliged to the whole scientific community, regardless of nationality or state of technical advancement. We are very alert to new developments and we participate in the most advanced technological developments (mainly in Germany and the US). And when e-publishing leaves the state of limited experimental applications, we will have e-journals etc. What makes that transition expensive is that old and new technology will coexist for quite some time. And we will have to provide both kind of products if we take our goals seriously: support free and unlimited flow of information. Will publishers survive? Yes, some will. Those will, who adopt fast enough to the changing environment - but that is true for any profession, is it not? I am convinced commercial publishers will survive, because they have something to add to the whole information process. And that is not just layout and promotion. That profession would otherwise not have survived for 200 years. All this discussion started with the question of color plates. Let me comment my personal view. And I am limiting myself to sciences (not arts, not medicine). Color may distract attention or focus it on a minor issue (I use color transparencies in presentations if I have something to hide). Black-and-white line drawings have their advantage over multicolored area graphs (not only in sciences): the viewer cannot easily be cheated, the psychology is better known (e.g. using logarithmic scale). I do believe, color should be used sparsely and applied only where necessary. Would you prefer watching the movie "Casablanca" in color? Sincerely yours, Dr. Rainer Stumpe Sciences Editorial Springer-Verlag Tiergartenstr. 17 D-69121 Heidelberg Phone: +49-(0)6221-487 310 Fax: +49-(0)6221-487 366 Internet: Stumpe@spint.compuserve.com