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. 



Editoeial ComjIittkb : S. Newcomb, Mathematics ; R. S. Woodwaed, Mechanics ; E. C. Pickeeing, 

 Astronomy ; T. C. Mendknhall, Physics ; R. H. Thueston, Engineering ; lEA Remsen, Chemistry ; 

 Charles D. Walcott, Geology ; W. M. Davis, Physiography ; Heney F. Osboen, Paleon- 

 tology ; W. K. Beooks, C. Haet Meeeiabi, Zoology ; S. H. Scuddee, Entomology ; C. E. 

 Bessey, N. L. Beitton, Botany ; C. S. Minot, Emhryology, Histology ; H. P. Bow- 

 ditch, Physiology ; J. S. Billings, Hygiene ; William H. Welch, Pathol- 

 ogy ; J. MoKeen Cattell, Psychology ; J. W. Powell, Anthropology. 



Friday, Makch 7, 1902. 



CONTENTS: 



The American Society of Bacteriologists: 

 Pkofesroe H. W. Conn , . 361 



2'he Ne-w Vapor Engines: Professor R. H. 

 Thurston 379 



What are the Requirements of a Course to 

 Train Men in Technical Chemistry? Pro- 

 fessor WiLLiiii A. NoYES 382 



Scientific Boohs: — 



SchuUze and Sevenoak's Plane and Solid 

 Geometry: Professor M. F. 0'Reili.y. 

 Shipley and MacBride's Zoology: Profess- 

 or Henry F. Nachtrieb. Gustav Theodor 

 Fechner: Professor Ewald Flugel 384 



Scientific Journals and Articles 387 



Societies and Academies : — 



The Iowa Academy of Sciences: A. G. 

 Leonard. The Geological Society of Wash- 

 ington: Alfred H. Brooks. The Biological 

 Society of Washington : F. A. Lucas. The 

 Philosophical Society of Washington: 

 Charles K. Wead. The Anthropological 

 Society of Washington: De. Walter 

 Hough. The Neio York Academy of Sci- 

 ences: Richard E. Dodce 388 



Discussion and Correspondence: — 



The Union and Biversdale Formations in 

 Nova Scotia: Dr. H. M. Ami. High Water 

 in the Lakes of Nicaragua : J. Crawfordes. 

 Vnio Condoni in the John Day Beds: 

 Robert E. C. Steabns 392 



Notes on Inorganic Chemistry : — 



The New Sulfuric Acid Manufacture: J. 



L. H 393 



Relief Ship for the British Antarctic Expedi- 

 tion 394 



The U. S. Geological Survey 395 



Scientific Notes and News 396 



University and Educational News 400 



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

 for review should be sent to the responsible editor, Pro- 

 fessor J. McKeen Cattell, Garrison-on-Hudson, N. Y. 



AMERICAN SOCIETY OF BACTERIOLOGISTS. 

 The third annual meeting of the Society 

 was held at Chicago University on Decem- 

 ber 31, 1901, and January 1, 1902. The 

 President of the Society was Professor W. 

 H. Welch, of Johns Hopkins University. 

 The following are abstracts of the papers 

 presented at the three sessions of the So- 

 ciety: 



Conditions affecting the Thermal Death- 

 point of Bacteria in Milk: H. L. Rus- 

 sell and B. G. Hastings, State Univer- 

 sity, Madison, Wis. 



The authors have tested the resistance of 

 bacteria in the surface pellicle ('scalded 

 layer ' ) that forms on milk when it is 

 heated to temperatures of 60° C. and above. 

 They confirmed under commercial condi- 

 tions the fact demonstrated by Theobald 

 Smith under laboratory conditions that the 

 resistance of the tubercle organism is ma- 

 terially increased when milk is heated in 

 contact -with, the air. In order to demon- 

 strate this increased resistance more clear- 

 ly they further experimented with a pecul- 

 iarly resistant coccus that they had found 

 in milk, which had, in a vegetative stage, a 

 thermal death-point of 75° C. when exposed 

 for ten minutes in sealed tubes. In open 

 tubes the organism retained its vitality as 

 high as 82° C. When surface membranes 

 were removed and plated on agar, colonies 

 developed from them, but not from samples 



