100 



SCIENCE 



[N. S. Vol. XLIX. No. 1256 



Models showing typical in the development of the 

 human embryo. Departmeut of Embryology, 

 Carnegie Institution of Washington. 

 In addition to these papers the Ecological So- 

 ciety of America contributed the following papers 

 to the joint program held on the evening of De- 

 cember 27: 



The Jiydrogen ion concentration of the sea water 

 of Pilget Sound and the reactions of the herring 

 (Clupea pallasii Cuvier) to hydrogen concen- 

 tration in sea water: Edwin B. Powers, Colo- 

 rado College. 



The PH of Puget Sound in the vicinity of Fri- 

 day Harbor varies with other conditions, tides, 

 depths and locality. The herring reacts positively 

 to a PH of 7.9 to 8.0. The reaction is positive to 

 this PH concentration both from a lower and a 

 higher PH. 



Ecological investigations under the federal gov- 

 ernment: Hakry C. Oberholser, National Mu- 

 seum. 



The most important ecological investigation 

 under federal government auspices are carried on 

 as a basis for other work, and are of far-reaching 

 importance. The Fish Commission studies the rela- 

 tion of fishes to their environment; the Forest 

 Service that of trees; the Bureau of Plant Indus- 

 try of various other plants, particularly with re- 

 gard to plant diseases and plant introductions; the 

 Bureau of Animal Industry, the life history of in- 

 ternal animal parasites; the Bureau of Entomol- 

 ogy, the life history of insects in their relation to 

 economic problems; and the Biological Survey, the 

 relations of animals, birds and other animals to 

 their environment and to each' other, for the de- 

 termination of the life zones of distribution. 



The distribution of the internal parasites of the 

 fish and other aquatic vertebrates of Oneida 

 LaTce, New YorTc: Henry S. Pratt, Haverford 

 College. 



An important feature of the meeting was the 

 conference between government and laboratory 

 zoologists on Saturday afternoon. Subject: Meth- 

 ods of securing Better Cooperation between Gov- 

 ernment and Laboratory Zoologists in the Solution 

 of Problems of General or National Importance; 

 Professor C. E. McClung, presiding. 



Papers on plans and problems of the Bureau of 

 Entomology that can be furthered by cooperation 

 with laboratory zoologists: Dr. L. O. Howard. 



Discussion led by Professor J. C. Needham, Cor- 

 nell University. 



Paper from the Bureau of Fisheries: Dr. Hugh 

 Smith. 



Discussion led by Professor H. B. Ward, Uni- 

 versity of Illinois. 



Paper from the Bureau of Animal Industry: Dr. 

 B. H. Eansom. 



Discussion led by Professor Herbert Osborn, 

 Ohio State University. 



Paper from the Biological Survey: Dr. E. W. 

 Nelson. 



Discussion led by Professor R. K. Nabours, Man- 

 hattan, Kansas. 



Plans of National Eesearch Council for advanc- 

 ing American Eesearch: Dr. J. C. Merriam, vice- 

 chairman. National Eesearch Council. 



Concluding discussion and proposal of definite 

 plans: Professor C. E. McClung. 



The proceedings of the conference will be pub- 

 lished in full in a later issue of Science. 



THE AMERICAN ASSOCIATION FOR THE AD- 

 VANCEMENT OF SCIENCE, SECTION F. 

 ZOOLOGY 



The Convocation "Week meetings of Section F 

 were held in conjunction with those of The Society 

 of American Zoologists at Baltimore, Maryland, 

 December 26-28. 



At the business session, Bennett M. AUen, Law- 

 rence, Kansas, was elected member of the council; 

 J. H. Gerould, Hanover, N. H., was chosen mem- 

 ber of the General Committee; Herbert Osborn, 

 Columbus, Ohio, was reelected member of Sectional 

 Committee for five years, and W. M. Wheeler, Bus- 

 sey Institution, was elected vice-president of the 

 section for 1919. 



In the absence of the secretary H. V. Neal in 

 Y. M. C. A. service in Italy, the secretary of the 

 zoologists, W. C. AUee, Lake Forest, 111., acted as 

 secretary for the meeting. W. C. Allee, 



Secretary 



SCIENCE 



A Weekly Journal devoted to the Advancement of 

 Science, publishing the official notices and pro- 

 ceedings of the American Association for 

 the Advancement of Science 



Published every Friday by 



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LANCASTER. PA. GARRISON, N. Y, 



NEW YORK, N. Y. 



Entered Id the post-effice at LaDcastcr, Pa., at second clasi matter 



