THE NAUTILUS. 143 



entered the Lawrence Scientific School at Harvard in 1858, gradu- 

 ating with the degree of Bachelor of Science in 1862. 



He enlisted in the volunteer militia in 1862 and at the close of the 

 Civil War was mustered out as Captain of the 47th Massachusetts 

 Infantry. Returning to Cambridge, he resumed his studies under 

 the guidance of Prof. Louis Agassiz, the greater part of his time 

 being directed to work upon the fossil Cephalopoda. In 1867, Mr. 

 Hyatt went to Salem, Mass., and was associated with Messrs. Put- 

 nam, Packard, and Morse in the care of the natural history collec- 

 tions of the Essex Insitute and the Peabody Academy of Science, 

 and in the editorial management of the American Naturalist. He 

 remained in Salem until 1870, when, on May 4, he was elected cus- 

 todian of the Boston Society of Natural History. By yearly choice 

 Mr. Hyatt remained the scientific head of the Society until his un- 

 timely death. 



For the head of a museum of Natural History, Prof. Hyatt had 

 many marked qualifications ; his knowledge of zoology, of paleozob'l- 

 ogy and geology was extensive ; he was skilful in manipulation, sug- 

 gestive in council, enthusiastic and approachable. His plan that a 

 natural history museum should be arranged so that a visitor on en- 

 tering should pass from the simpler groups to those more specialized, 

 and that the specimens in each case should be similarly classified, 

 though opposed as impractical, is both sound and feasible. 



Prof. Hyatt's reputation as a teacher will rest largely on the work 

 he did for the Teacher's School of Science. His management of this 

 school was very skilful, and his lectures, of which he gave many 

 courses, were uniformly successful. 



In the pursuit of his investigations, Prof. Hyatt not only studied 

 the accumulations preserved in museums in this country and abroad, 

 but he partook in active field work ; he dredged off the east coast at 

 various points from Labrador to Noank, Conn., and explored many 

 geological horizons in Canada, New England, New York and the 

 far west. 



The following are some of his more important papers on mollusca : 

 On the parallelism between the different stages of life in the indi- 

 vidual and those of the entire group of the molluscous order Tetra- 

 branchiata. Fossil Cephalopods of the Museum of Comparative Zool- 

 ogy. The genesis of the Tertiary species of Planorbis at Steinheim. 

 Genera of fossil Cephalopods. Genesis of the Arietidae. 



