Research on Invertebrates 67 



ecological work and for securing data for proposed exhibits 

 for the Museum. With the aid of maps and other informa- 

 tion secured by the courtesy of Mr. George B. Dorr, a trip 

 was made through the mountains of the Mount Desert Na- 

 tional Park, a region maintained in forested condition, with 

 many lakes and streams in which fresh-water invertebrates 

 are abundant. 



During the latter part of the month, Mr. Miner spent 

 several days at the Marine Biological Laboratory at Woods 

 Hole, Massachusetts, in company with Mr. W. H. South- 

 wick as artist, where through the courtesy of Director Frank 

 R. Lillie, and Assistant Director Gilman A. Drew, they se- 

 cured sketches and observations to be utilized in completing 

 the Gay Head Sound-Bottom Group for the Darwin Hall. 



During the past year, Mr. Miner has devoted much time 

 to the preparation of a text-book entitled "Animal Life and 



Its Evolution/' which presents a survey of the 

 P bli ti animal kingdom with especial reference to the 



relationships of the main groups, from an evo- 

 lutionary standpoint. Illustrations are drawn largely from 

 exhibits in the Darwin Hall and elsewhere in the Museum. 

 The book is adapted to upper high school and college classes 

 and for the use of teachers of biology. It is drawn up with 

 especial reference to a series of twelve charts in color, based 

 upon Museum exhibits and reproduced from photographs 

 skilfully colored by Mr. William E. Belanske under Mr. Miner's 

 direction. The production of both text-book and charts has re- 

 quired much care and thought. It is intended to supple- 

 ment these with a more popular handbook and guide to the 

 Darwin Hall. All three publications may be used in con- 

 junction or independently, and are designed to facilitate the 

 full utilization of the educational possibilities of the Darwin 

 Hall. 



Mr. Miner has also partially completed a study of the 

 phylogeny of the arm muscles of certain lower vertebrates, 

 through the cooperation of the Department of Comparative 

 Anatomy, as a preliminary step to a future comparison with 

 the fundamental musculature of invertebrate types. 



