VI OBITUARY NOTICES OF MEMBERS DECEASED. 



was also one of the editors of the " Journal of Experimental 

 Zoology." 



As a scientific investigator Brooks showed sound judgment, depth 

 of insight, and untiring industry and enthusiasm. In his research he 

 did not attempt to cover the whole field of zoology, but he did attempt 

 to do thoroughly and well all that he undertook. His work began at 

 a time when descriptive embryology was the newest and most promis- 

 ing branch of zoology and much of his earlier work was devoted 

 to this field. His first important paper was on the " Development 

 of Salpa," and many of his later works, some of them monumental 

 monographs, were devoted to the anatomy, embryology and evolu- 

 tion of this interesting group of ascidians. Indeed his latest work 

 which was left in manuscript and for which he had prepared hun- 

 dreds of beautiful drawings, was a continuation of his great 

 " Monograph on the Genus Salpa." Among other important re- 

 searches may be mentioned his studies on the " Lucayan Indians," 

 " Development of Marine Prosobranchiate Gasteropods," " Early 

 Stages in the Development of Fresh Water Fulminates," " The 

 Development of Lingula and the Systematic Position of the Brachi- 

 opoda," " The Relationships of Mollusca and Molluscoidea," " The 

 Life History of the Hydromedusas," " The Stomatopoda of the 

 Challenger Expedition," " Lucifer: A Study in Morphology," " The 

 Embryology and Metamorphosis of the Macroura " (with F. H. 

 Herrick), and a "Monograph of the Genus Doliolum." 



His studies on the development of mollusks led him to an ex- 

 amination of the life history and habits of the oyster and this was 

 followed by a consideration of the best methods of propagating and 

 cultivating oysters. His work on this subject was embodied in a 

 book called " The Oyster," which has recently appeared in a second 

 edition. Because of its economic importance. Brooks has been 

 more widely known through this work than through any other. 

 He was made chairman of the Maryland Oyster Commission-and did 

 much to improve this industry by a scientific treatment of the subject. 



He wrote but one text-book, his " Handbook of Invertebrate 

 Zoology" (1882) but this was so excellent that it still remains a 

 model, and in some respects has not been excelled, if equalled, by 

 any later book on that subject. 



