Biographical S\etch 13 



of the brook lamprey; m 1901 a longer paper on the habits and breeding of Amia; 

 in 1903 an ''Obituary Notice of a Lung-fish"; in 1912 a paper on the behavior of larval 

 eels during their transformation stages. An important paper in this series was his "Notes 

 on the Living Specimens of the Australian Lung-fish, Ceratodus forsteri in the Zoological 

 Society's Collection" (1906). This contained many excellent sketches showing the move- 

 ments of the fish, the paired fins in various postures, etc. 



CHIMAEROID FISHES AND THEIR DEVELOPMENT 



1903-1906 



Undoubtedly the most comprehensive single monograph Dean ever published was his 

 Carnegie Institution memoir ''Chimaeroid Fishes and their Development" (1906), the 

 subject having been dealt with in a number of preliminary and advance papers beginning 

 in 1899. The embryological material for this memoir he had sought for and collected : first 

 in Naples and in Portugal in 1891; in Puget Sound and Alaska, in 1896; at Pacific 

 Grove, California in 1896 and 1899; finally at Misaki and Tokyo, Japan in 1900, 1901. 

 Meanwhile he had searched the Museums of Paris, London, Berlin, Bergen, Tromsoe, and 

 Tokyo for comparative material among fossil and recent chimaeroids. The most impor- 

 tant conclusion was that the chimaeroids, in spite of the opinions of many authors, are 

 clearly nothing but highly specialized offshoots from some lowly branch of the true 

 sharks, because they are almost wholly shark-like in their entire plan of development. 

 The* memoir will long stand as a model for its many-sided marshalling of evidence from 

 embryology, comparative anatomy, and palaeontology. 



PAPERS ON ZOOLOGICAL LABORATORIES, BIOGRAPHIC MEMOIRS, REVIEWS OF BOOKS, ETC. 



1891-1910 



In 1891 he began a series of papers in which he described the numerous laboratories 

 wherein he had worked at various times, including Cold Spring Harbor (Long Island) and 

 the laboratories of France, England, Holland, Italy, Austria, Germany, Norway, Russia, 

 California, and Japan. These brief papers scattered in various publications contain much 

 that will be of interest to the historian of zoology in the nineteenth century, and the same 

 may be said of his biographical notices of many zoologists and others with whom he had 

 been associated. Under this last heading we may list his address on ''Dr. Ryder's Work 

 with the United States Fish Commission" (1895); his memorial notices of his junior col- 

 leagues and students, Bradley G. GrifEn (1897) and Nathan Russell Harrington (1899); 

 of his friend Major Frederick Mather (1900) the fish culturist; of Eugene G. Blackford 

 (1905) the oyster-culturist; of his old teacher in biology Dr. William Stratford (1908); 

 of Karl von Kupffer (1900) his preceptor in the embryology of fishes; of the Japanese 

 artist T. Nishikawa (1909) and of his old friend the Japanese zoologist Professor Kakichi 

 Mitsukuri (1909). The writing of these memorial notices of his friends and colleagues in 

 the midst of all his other activities, is a manifestation of his generous loyalty and unselfish- 

 ness. He was also the author of an important series of critical reviews of zoological works. 



