SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE 



Friday, Pebkuaet 28, 1908 

 contents 



The American Chemical Society and Section 

 G of the American Association for the Ad- 

 vancement of Science: Dr. B. B. Cuery, 

 Professor Charles L. Parsons 321 



The Botanical Society of America: Professor 

 Duncan S. Johnson 332 



Scientific Books: — 



Osbom on the Evolution of Mammalian 

 Molar Teeth to and from the Triangular 

 Type: Professor Richard S. Lull. Ar- 

 rhenius's Imminochemistry : Professor 

 Jacques Loeb. The Electrical Conductivi- 

 ties of Aqueous Solutions: Professor E. 

 C. Franklin 341 



Scientific Journals and Articles 345 



Societies and Academies: — 



7'he Society of Chemical Industry: Dr. H. 

 Schweitzer. The Chemical Society of 

 Washington: J. A. LeClerc. The Amer- 

 ican Chemical Society: Dk. C. M. Joyce. 

 The Thirteenth Annual Winter Meeting of 

 tlie Vermont Botanical Club : L. R. Jones. 

 The Geological Society of Washington: Dr. 

 Fred E. Wright 345 



Discussion and Correspondence: — • 



The Teaching of Mechanics: Professor 

 Ernest W. Brown. Adjustable Burden 

 Baskets: Professor 0. T. Mason. Note 

 on the " Lafayette Beds " of Louisiana : 

 Professor G. D. Harris 350 



Special Articles: — 



Penetrating Radiation: Dr. W. W. Strong. 

 Melting-point Curves of Binary Mixtures of 

 the Three Nitranilines : Professor J. 

 Bishop Tingle, H. F. Rolker 351 



Notes on Entomology : Dr. Nathan Banks . . 354 



Science in New Zealand: James Deummond 356 



Scientific Notes and News 357 



Uniiwrsity and Educational Neics 359 



MSS. iutended for publication and books, etc., intended for 

 review abould be sent to the Editor of Science, Garrison-on- 

 Hudson, N. Y. 



THE AMERICAN CHEMICAL SOCIETY AND 

 SECTION C OF THE AMERICAN ASSO- 

 CIATION FOR THE ADVANCEMENT 

 OF SCIENCE 



II 



ORGANIC CHEMISTRY SECTION 



Julius Stieglitz, Chairman 

 Stereoisomeric Chlorimido Esters: W. S. 



HiLPERT. 



The work is an elaboration and contin- 

 uation of the work of Stieglitz and Earle, 

 who in 1903 discovered the stereoisomeric 

 chlorimido esters of meta-nitro-benzoic 

 acid. 



The new stereoisomers discovered are: 

 methyl chlorimido p-nitrobenzoates, ethyl 

 chlorimido p-nitrobenzoates, methyl chlo- 

 rimido 4-methyl-3-nitrobenzoates, methyl 

 clilorimido beta-naphtoates, ethyl chlo- 

 rimido beta-naphtoates. 



For each pair of isomers identity of 

 structure was proven by chemical means; 

 the impossibility of polymeric forms being 

 present was substantiated by molecular 

 weight determinations, and physical or 

 crystal isomerism was shown to be absent 

 by the fact that each of every pair of 

 stereoisomers maintained its identity in all 

 changes of physical conditions. 



The Applications of Physical Chemistry 

 to Organic Chemistry: Julius Stieg- 

 litz. 



The author first called attention to the 

 valuable aid given by physico-chemical 

 methods in the study of isomerism, of 

 stereoisomerism of the asymmetric type 

 and of the "cis-trans" type, and of tauto- 



