Cobb's laboratory work was extraordinarily well organ- 

 ized, and various operations were divided among his assistants. 

 He developed special techniques for examining live or unstained 

 material, and for making whole mounts of worms made trans- 

 parent by glycerin or other media. One of the assistants was 

 busy in making such preparations and placing them on stages of 

 the microscopes set on the round table. When this was done, 

 Cobb began examining them one after another and pushing the 

 table around. The notes referring to each slide were placed 

 in a compartment under each microscope. They were immedi- 

 ately collected by one of the girls, typed, and placed in the 

 same order on another round table. Cobb developed great 

 skill in the use of camera lucida for illustrating the minute 

 details of structure, which are usually destroyed by ordinary 

 reagents. The artist assisting him worked on drawings which 

 later appeared in his papers. One of these illustrations attrac- 

 ted attention of all the members of the Laboratory. It was an 

 anatomical drawing of a free -living marine nematode, Metoncholaimus 

 pristiurus, common in the muddy bottom of Woods Hole harbor 

 a little below low tide level. This nema is particularly suitable 

 for use in laboratory courses in zoology because it can be ex- 

 amined alive or in temporary mounts in lactophenol and five 

 percent potassium hydrate. The original drawing consisted of 

 a number of sheets, each about two feet long. By the end of the 

 summer they were all pasted together making a composite more 

 than 12 feet long in which structural details of highly complex 

 systems of organs were depicted in various colors. The black 

 and white reproduction of this illustration can be found in the 

 Journal of the Washington Academy of Sciences (Cobb, 1932). 

 It is hoped that the original masterpiece has not been lost. 

 The anatomical description of this nema, accompanied by 

 drawings, is used at the summer course of Invertebrate zool- 

 ogy given by the MBL, and several bound copies of this paper 

 are kept in the library as an aid to the students. 



Daily contact with this remarkable man showed other 

 facets of his personality- -unshaken dignity, frankness combined 

 with courtesy, and a keen sense of humor. He frequently com- 

 posed delightful verses which, to the extreme joy of his audience, 

 he read at the end of his scientific addresses. 



In 1924 and 1925, Willis H. Rich, in charge of the Divi- 

 sion of Inquiry, was the summer Director. He remained at 

 Woods Hole for the entire summer season, from June 22 to 

 September 12. Among the new persons who availed themselves 

 of the use of the Fisheries Laboratory were F. G. Hall of 

 Milton College, Wise, who, with his collaborators Samuel 

 Lepkofsky and I. E. Gray, started a long-continued program of 

 studies of fish respiration. Gray's work was primarily concerned 

 with the chemical composition of fish blood. Baldwin Lucke, 

 Professor of Pathology, School of Medicine of the University of 



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