Hi PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May I903, 



THE ANNIVERSARY ADDRESS OF THE PRESIDENT, 

 Prof. Charles Lap worth, LL.D., E.R.S. 



Our ranks have been thinned during the past year by many 

 widely-deplored losses. To some of these I will now refer. 



Prof. Alphees Hyatt, Foreign Correspondent of the Geological 

 Society, died at Cambridge (Mass.), on January 25th, 1902, in his 

 64th year. Outside of his many valuable publications in pure 

 zoology, Prof. Hyatt's chief reputation will largely rest on his 

 researches in the field of organic evolution. Perhaps no other 

 American contributed so much towards the discovery of the laws o£ 

 development and growth, and to an exposition of the exact methods 

 of research in evolutionary problems. The principles that he enun- 

 ciated constitute the foundation of a young and vigorous school of 

 evolution, which is already making itself felt in the scientific world. 



He was born in 1838, and he completed his freshman year at 

 Yale with 0. C. Marsh in 1856. He then travelled for a year in 

 Europe, and afterwards entered the Lawrence Scientific School 

 at Harvard, graduating in 1862. He served for nine months 

 during the Civil War. Later he renewed his studies with Prof. 

 Louis Agassiz, and subsequently became intimately identified with 

 all the scientific interest centreing about Boston. He had official 

 connection with the Essex Institute, the Peabody Academy of 

 Science, the Laboratory of Natural History at Annisquam, the 

 Massachusetts Institute of Technology, Boston University, the 

 Museum of Comparative Zoology, the United States Geological 

 Survey, and the Boston Society of Natural History, of which he had 

 been Curator since 1881. In 1869 he was elected a Fellow of the 

 American Academy of Arts & Sciences, and in 1875 a Member of 

 the National Academy of Sciences. He was a member of many 

 other societies at home and abroad, and was elected a Foreign 

 Correspondent of our own Society in 1897. 



His various publications include : — Observations on the Polyzoa 

 (1866), Eossil Cephalopoda of the Museum of Comparative Zoology 

 (1872), Revision of the North American Poriferae (1874-77), 

 Genesis of the 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 



