378 



SCIENCE. 



fN. S. Vol. XVIII. No. 455. 



Mr. C is conducting two lines of work: (1) 

 studies on molecular rearrangement, and of 

 saponification and hydrolysis of organic com- 

 pounds by physico-chemical and synthetic-or- 

 ganic methods; and (2) studies on the exist- 

 ence of positive halogen ions. 



Mr. D is conducting work upon the disso- 

 ciation constants of dibasic acids. 



Mr. E upon the constitution of salts of or- 

 ganic cyanogen compounds. 



Mr. F upon dialkyl derivatives of hydrox- 

 ylamine.- 



THE DEPARTMENT OF GEOLOGY. 



Mr. A is engaged in the investigation of 

 the Kinderhook faunas of the Mississippi 

 valley. 



Mr. B is engaged upon the graphical ex- 

 pression of the chemical composition of ig- 

 neous rocks, with reference to their mineral 

 constitution and their classification. 



Mr. C has under investigation the glacia- 

 tion of the western mountains and the geology 

 of the coastal plain. 



Mr. D is working upon a group of "prob- 

 lems relating to the origin and early stages 

 of the earth and upon the system of dynamics 

 connected therewith. 



THE DEPARTMENT OF ZOOLOGY. 



Mr. A is studying (1) the evolution of spe- 

 cies as indicated in the genetic relations of 

 color-patterns, voices, instincts, and general 

 life-histories; (2) experiments in hybridizing 

 species, to ascertain, if possible, general laws 

 governing the transmission of hereditary 

 characters, and the conditions necessary to 

 creation of new species. 



Mr. B ■ (1) the method of evolution. The 

 quantitative study of the changes that a spe- 

 cies undergoes in different localities and in 

 different geological periods at one locality. 

 Illustrated by studies on the shells of the 

 mollusk known as the ' scallop ' (Pecten) from 

 different points on the coast of North America 

 and Europe and from fossil beds in Virginia. 



Mr. is working on problems in embry- 

 ology: (1) the role of cell-division in devel- 

 opment; the relation of the process of cleav- 

 age of the ovum to the formation of an em- 



bryo; (2) the investigation of the problem of 

 correlative differentiation, i. e., the influences 

 exerted by parts of an embryo upon the de- 

 velopment of other organs; more particularly, 

 at present, the mechanics of development of 

 the amnion in the chick; and allantois; and 

 the influence of the nervous system in the 

 formation of organs. 



Mr. D is engaged in experimental study of 

 problems connected with regeneration: (1) the 

 factors influencing regeneration and the effect 

 of altered conditions; (2) the differentiation 

 of the ■ regenerating structures and the dif- 

 ferences between regenerated and original 

 structures; (3) the physiology of form and 

 form-regulation, i. e., the return to normal or 

 typical form, after experimental alteration of 

 form and especially the effects of physical 

 factors, e. g., pressure, tension, etc., upon 

 form in the lower invertebrates. 



Mr. E is making experiments and statistical 

 investigations of the relations existing be- 

 tween some of the factors of the environment, 

 i. e., temperature, humidity, food, topography, 

 etc., and the production of variations in in- 

 sects, especially in the color-patterns of cole- 

 optera; (2) investigating the evolution of 

 large genera and of groups of small genera, 

 to determine if possible what causes are the 

 dominant ones in the production of new races 

 and species, and the conditions necessary for 

 their preservation; based upon the experi- 

 ments and statistics (1) and the ontogeny and 

 phylogeny of color-patterns, color variations, 

 and geographical distribution. 



THE DEPARTMENT OF ANATOMY. 



Mr. A is conducting research in problems 

 of anatomy and pathology of the nervous 

 system and in infectious diseases. 



Mr. B has completed, since coming to the 

 university, two papers : one on the structure 

 of the cardiac glands of mammals; the other, 

 the structure of Brunner's glands in mam- 

 mals. He has under way three other re- 

 searches: (1) on the structure of Paneth 

 cells; (2) on the histology of the gastric 

 glands of vertebrates; (3) on the struc- 

 tures of the human stomach. It is to be 



