MUSEUM OF COMPARATIVE ZOOLOGY. 15 



Of the students engaged in special researches (Zoology 20 a) 

 three completed their work and presented theses which were 

 accepted for the Doctorate in Zoology. 



Of the others, Mr. P. E. Sargent continued his studies on 

 teleosts ; Mr. R. M. Strong gave considerable time to the comple- 

 tion of a paper on the varieties of the southern shrike, and 

 began the study of color in feathers; Mr. P. Frandsen pursued 

 work on the nervous system of certain flat-worms, reaching inter- 

 esting results ; Mr. F. Howe, Jr., continued his investigation of 

 the nervous system of the lobster; Mr. W. A. Willard began the 

 study of the cranial nerves of one of the reptiles ; Mr. W. L. Tower 

 studied the development of the wings in a group of insects ; Mr. 

 R. S. Breed began a comparative problem in the metamorphosis of 

 insects; Mr. H. Crawley carried on investigations to ascertain the 

 nature of the absorption of fat in Amphibia ; Mr. J. M. Johnson 

 gave some time to a study of the nervous system of Entomostraca ; 

 and Mr. R. M. Yerkes carried on some experiments to ascertain 

 the nature of the reaction of certain Entomostraca to light. 



The degree of Doctor of Philosophy was conferred upon three 

 candidates in Zoology in June, 1900: Mr. Herbert Wilbur Rand, 

 whose thesis was U A Study upon the Regenerating Nervous Sys- 

 tem of Lumbricus, with Special Regard to the Centrosome of 

 Nerve Cells." Dr. Rand has been appointed Instructor in Zool- 

 ogy in this Department for the year 1900-1901 ; Mr. Charles 

 William Prentiss, whose thesis was on u . The Otocyst of Decapod 

 Crustacea ; its Structure, Development, and Physiology." Dr. 

 Prentiss has been appointed Instructor in Comparative Anatomy 

 in the School of Veterinary Medicine of Harvard University ; 

 Mr. Stephen Riggs Williams, whose thesis was on " Changes Inci- 

 dent to the Migration of the Eye in Pseudopleuronectes america- 

 nus, together with Some Observations on the Optic Tract and 

 Tectum Opticum." Dr. Williams has been appointed to the Chair 

 of Biology in Miami University. Mr. Peter Frandsen, whose 

 thesis has not yet been completed, has accepted an appointment 

 to the Chair of Biology in the University of Nevada, and Mr. W. 

 L. Tower a like position in Antioch College. 



In December, 1899, Dr. F. W. Bancroft resigned his Parker 

 Fellowship and relinquished the stipend for the year to accept 

 a position in the Zoological Department of the University of 

 California. 



