390 ALPHEUS HYATT 



part of his time to official work for the U. S. Geological Sur- 

 vey, devoting his attention mainly to lower Mesozoic fossils, 

 and at the time of his death he was completing a monograph on 

 " Pseudoceratites of the Cretaceous " which has since been pub- 

 lished by the Geological Survey. 



Hyatt's ability and achievements as a biologist were recog- 

 nized by his election as a member of the National Academy of 

 Sciences in 1875. He held corresponding or honorary mem- 

 bership in many other scientific societies and received the degree 

 of LL.D. from Brown University in 1898. 



Hyatt was a specialist and much of his published work was 

 unusually technical, yet he did not allow himself to become 

 narrow in either his interests or his sympathies. While he was 

 able to contribute largely to the philosophical side of biology, he 

 also found time for elementary teaching and popularizing of 

 scientific facts, as shown in the systematic arrangement of the 

 museum under his care, in the direction of the sea-side laboratory 

 at Annisquam, founded by him, and in his direction of the 

 Teacher's School of Science, which successfully prepares the 

 teachers of Boston for their elementary science instruction in 

 the public schools. 



Although Hyatt published valuable papers on other classes of 

 animals, such as " Observations on Polyzoa," " Revision of the 

 North American Porifera," and "The genesis of the Tertiary 

 species of Planorbis at Steinheim," and also on general paleon- 

 tological and geological subjects, his most important works 

 whose influence will doubtless be most lasting, treat of fossil 

 Cephalopoda and of the general principles of evolution which 

 he deduced from their study. Among the more prominent of 

 those works may be mentioned: "Fossil Cephalopods of the 

 Museum of Comparative Zoology, Embryology"; "Genera of 

 fossil Cephalopods " ; " Genesis of the Arietidae " ; " Phylogeny 

 of an acquired characteristic '" ; the chapter on Cephalopoda in 

 the English edition of " Zittel's Text-book of Paleontology" 

 and the posthumous "Pseudoceratites of the Cretaceous" al- 

 read}^ mentioned. 



Hyatt's views and position as a general biologist can only be 

 indicated here by the statement that he was regarded as one of 



