76 



SCIENCE 



[N. S. Vol. LIII. No. 1360 



In normal respiration the air passes freely 

 in and out through the gauze and the tubes 

 E and D. When artificial respiration is nec- 

 essary all that is needed is to start the ap- 

 paratus and the air going through the small 

 tube (sin) enters the trachea with sufficient 

 velocity to go well down into the lungs. With 

 this device it is not necessary to closely ap- 

 proximate the volume of the normal tidal air, 

 because any excess escapes at once through 

 without causing imdue pressure in the lungs. 

 An excess of air is therefore always desirable. 



I have found that four difFerent sizes of 

 trachea cannulas suflice for our needs. This, 

 however, requires only a variation in size of 

 the trachea end of the cannula. These difFer- 

 ent sizes can be made, therefore, so that the 

 anesthetic cone will fit each of them. 



This device commends itself because of its 

 simplicity, its effectiveness, its cheapness, and 

 the ease of manipulation. 



J. E. Slonakee 



Stanford XlNivERsirY, 

 California 



THE AMERICAN ASSOCIATION FOR 



THE ADVANCEMENT OF 



SCIENCE 



SECTION F— ZOOLOGY 



The Convocation Week meetings of Section !P 

 (Zoology) of the American Association for the 

 Advancement of Science were held in conjunction 

 with those of the American Society of Zoologists 

 at Chicago, Illinois, December 28, 29 and 30, 1920. 



At the business meeting of the Section, Pro- 

 fessor M. P. Guyer was elected member of the 

 council. Professor H. W. Rand was elected sec- 

 retajry of Section F for five years. Professor C. 

 0. Nutting was appointed member of the general 

 committee, and Professor M. M. Metcalf, member 

 of the section committee for five years. 



The sectional committee nominated Professor C. 

 A, Kofoid, of the University of California, as 

 vice-president of the Section for the ensuing year. 



Tihe officers for the Toronto meeting will be: 

 ' Vice-president — C. A. Kofoid, University of 

 California. 



Betiring Vice-president — John Sterling Eangs- 

 ley. University of Illinois. 

 . Secretary — Herbert W. Eand, Harvard Univer- 



Member of the Council — M. F. Guyer, Univer- 

 sity of Wisconsin. 



Member of the General Committee — C. C. Nut- 

 ting, University of Iowa. 



Members of the Sectional Committee in addi- 

 tion to the officers above: Vice-president, St. Louis, 

 W. M. Wheeler (1 year); V. E. Shelford (2 

 years) ; Herbert Osborn (3 years) ; H. B. Ward 

 (4 years) ; M. M. Metcalf (5 years) ; H. V. Neal, 

 Preceding Secretary; Ex-offieio, W. C. AUee, sec- 

 retary American Society of Zoologists. 



The address of the retiring vice-president of 

 Section P, Professor William Morton Wheeler, of 

 Harvard University, upon ' ' The organization of 

 research, ' ' was delivered at the Biologists ' smoker 

 at the Ida Noyes Hall, Tuesday evendng, Decem- 

 ber 28, at 8 o'clock. The address attracted an 

 unusually large audience. 



' Under the rules of the association all arrange- 

 ments for the program of the meetings were in the 

 hands of the executive committee of the American 

 Society of Zoologists. There were more than 

 ninety papers on the program and it became nec- 

 essary consequently to divide the program into 

 two sections on Wednesday, the twenty-ninth, 

 meeting simultaneously in the Harper Library and 

 Boom 14, Zoology Building. 



The "popular interest" session of the meetings 

 was a symposium on Fertilization, held in the 

 Harper Library, at ten o'clock, on Thursday 

 morning, December thirty. Papers were presented 

 by C. A. Kofoid, P. E. Lillie, E. E. Just, 0. C. 

 Glaser, C. E. McOlung (excused at personal re- 

 quest) and D. H. Tennant. 



' The attendance upon all of the meetings was so 

 great as to tax the capacity of the rooms in which 

 they were held. H. V. Neal, 



Secretary 



Tufts College, Mass. 



SCIENCE 



A Weekly Journal devoted to the Advancement of 

 Science, publishing the official notices and pro- 

 ceedings of the American AssociatioB for 

 the Advancement of Science 



Published every Friday by 



THE SaENCE PRESS 



LANCASTER. PA. GARRISON, N. "^ 



NEW YORK. N. Y. 



Entered in tlie post-office at Lancaster, Pa., ai lecond clan maUer 



