164 Scientific Intelligence. 



Alpheus Hyatt, the eminent zoologist, died at Cambridge, 

 Mass., January 15, 1902, in the sixty-fourth, year of his age. 



Outside of his many valuable publications in pure zoology, 

 Professor Hyatt's chief reputation will rest mainly on his researches 

 in the field of organic evolution. No other American has con- 

 tributed so much toward the discovery of the laws of develop- 

 ment and growth, and to an exposition of exact methods of 

 research in evolutionary problems. The principles he enunciated 

 constitute the foundation of a young and vigorous school of 

 evolution, which is already making itself felt in the scientific 

 world. 



Alpheus Hyatt was born at Washington, D. C, April 15, 1838. 

 He completed the Freshman year at Yale with the late O. C. 

 Marsh, in the class of 1860; then, after traveling a year in 

 Europe, he entered the Lawrence Scientific School at Harvard, 

 and was graduated in 1862. He served during the civil war, 

 attaining the rank of Captain. Later, he renewed his studies 

 with Louis Agassiz, and has since been intimately identified with 

 all the scientific interests centering about Boston. His official 

 connections were with the Essex Institute, the Peabody Academy 

 of Science, the laboratory of natural history at Annisquam, 

 the Massachusetts Institute of Technology, Boston University, 

 Teachers' School of Science, the Museum of Comparative Zoology, 

 the United States Geological Survey, and the Boston Society of 

 Natural History, of which he was the curator since 1881. In 

 1869, he was elected a fellow of the American Academy of Arts 

 and Sciences, and in 1875 a member of the National Academy of 

 Sciences. His name also appears in the roll of fellows and mem- 

 bers of many other societies at home and abroad. 



Among his principal publications should be mentioned : Obser- 

 vations on Polyzoa (1866) ; Fossil Cephalopods of the Museum 

 of Comparative Zoology (1872) ; Revision of North American 

 Poriferae (1874-77) ; Genesis of Tertiary Species of Planorbis at 

 Steinheim (1880) ; Genera of Fossil Cephalopoda (1883) ; Larval 

 Theory of the Origin of Cellular Tissue (1884) ; Genesis of the 

 Arietidae (1889); Phylogeny of an Acquired Characteristic 

 (1895) ; Guides for Science Teaching ; and numerous essays on 

 the stages of growth and decline in animals, and on various laws 

 and problems of evolution. c. e. b. 



Thomas Meehan, the well known botanist and nurseryman, 

 died on November 19 in his seventy-sixth year. An Englishman 

 by birth, he came to Philadelphia in 1848, and was soon success- 

 fully established in the nursery business. He published many 

 horticultural and botanical papers and also the two volumes 

 entitled " Handbook of Ornamental Trees " and " The Native 

 Flowers and Ferns of the United States" (1878-79). 



