No. 450.] CHARLES EMERSON BEECHER. 



visits to New Haven is visits to " the attic " vvhert 

 hours, deHghtful intercourse, social and scientific \va; 

 far into the night. 



Already interested in studies of the dcvclopniciit ( 

 from his work noted on the development <»t Silurian 1 

 in 1889 Beecher became deeply interested in the hi 

 Hyatt's methods of work. The application of the 

 stages in development, acceleration, parallelism, a 

 genesis to the unraveling of the genealogical rclati 

 and fossil animals. Bringing to this work his lai 

 knowledge of species and the structure of fossil ty 

 entered into this field with characteristic cncr-) aiu 

 leader of the Hyatt School. Beecher's reputation ; 

 gator will rest chiefly on the rich results he obt 

 critical, painstaking application of these fruitful pi 

 Professor Hyatt labored so long to establish. 



Already interested in Brachiopoda, Beecher's t^r; 

 of the Hyatt methods was to this group. Combin 

 of young, adult, living and fossil types, he worked 

 cation based on the principles of development, an( 

 class into four orders. He pointed out the prin 

 from the Lower Cambrian as the archaic radical fr. 

 whole class could be derived. This stands to-tlay a 

 only example in which the primitive radical of ? 

 equal in systematic value to the Brachiopoda can 1 

 with reasonable assurance. Besides his work on 



A^hole, Beecher wrote many papers 1 



which he 



development, structural and genealogical relations ot 

 minor groups of Brachiopoda. Such are his stu( 

 development of Bilobites, Terebratalia, Zygospin 

 remarkable studies of loop-bearing Brachiopoda. It 

 much to say that a careful study of Beecher's papers 

 pods, and the same may be said of his trilobites, v 

 student a more comprehensive view of the class thi 

 published source. Incidentally to his work on 

 Beecher accumulated a rich collection of recent 

 Brachiopoda in the Yale museum, illustrating the 

 development, often by large series, ^ 



seventy-five 



