318 CARNEGIE INSTITUTION OF WASHINGTON. 



differentiation, but also lead us close to the understanding of the 

 mechanisms of protoplasm, to which we must look for the explana- 

 tions of the phenomena of living matter. 



POLITICAL SCIENCE. 



Rowe, L. S., University of Pennsylvania, Philadelphia, Pennsylvania. 

 Grant No. 633, allotted Dee. 14, 1909. Study of federal system of 

 Mexico. (For previous reports see Year Books Nos. 8-11.) $1,500 



In 1910, under a grant from the Carnegie Institution of Wash- 

 ington, Dr. Rowe began the study of the Mexican Federal system. 

 In 1911 and 1912 he returned to Mexico for the purpose of con- 

 tinuing the investigation and collecting additional material. These 

 trips were made without any further grants from the Institution. 

 For the concluding chapter, ''Constitutional Guarantees in the 

 Mexican Political System," additional material must be secured. 

 The manuscript will probably be completed during the coming winter. 



PSYCHOLOGY. 



Franz, S. I., Government Hospital for the Insane, Washington, District of 

 Columbia. Grant No. 80, allotted March 13, 1903. Investigation 

 of the functions of the cerebrum. (For previous reports see Year 

 Books Nos. 4-10.) $1,000 



During the two years, September 1, 1911, to August 31, 1913, the 

 publication of the results of researches on the functions of the occipital 

 lobes were completed ; work on the motor functions of the occipital 

 lobes and on the motor functions of the precentral cortex is still in 

 progress. 



ZOOLOGY. 



Castle, W. E., Harvard University, Cambridge, Massachusetts. Grant 

 No. 841, allotted December 13, 1912. Continuation of experimental 

 study of heredity in small mammals. (For previous reports see Year 

 Books Nos. 3-11.) $1,000 



During the past year several investigations of heredity, with 

 which the writer has been for some time occupied, have been com- 

 pleted or brought to a point where definite conclusions could be 

 drawn from them. 



The selection experiments with rats, in which Dr. John C. Phillips 

 has collaborated, have reached a point which warrants full publica- 

 tion. These experiments have extended over a period of 7 years, in 

 the course of which over 20,000 rats have been raised and studied. 



During this period the details of this work have received personal 

 attention from one or both of us. The results obtained, we believe, 

 have an important bearing on the question of the efficacy of mass 



