° 191V J Palmer, In Memoriam: Theodore Nicholas Gill. 395 



the Advancement of Science at the 17th Meeting in Chicago in 

 1868, and became a Fellow in 1874. In 1896 he was Vice-President 

 of Section F on Zoology and upon the death of the President, his 

 life long friend, Prof. E. D. Cope, on April 12, 1897, as senior Vice- 

 President, he succeeded to the Presidency of the meeting held in 

 Detroit in that year. In 1873 he was elected a member of the 

 National Academy of Sciences and represented the Academy at 

 the International Zoological Congress at Boston in 1898, and at 

 the 450th aniversary of the founding of the University of Glasgow, 

 at Glasgow, Scotland, in 1901. He was a member of the American 

 Philosophical Society, the Biological Society of Washington, the 

 Cosmos Club, one of the honorary vice-presidents of the Audubon 

 Society of the District of Columbia, a foreign member of the Zoo- 

 logical Society of London, and a member of more than 70 other 

 scientific organizations. In 1894 he was made associate in zoology 

 of the U. S. National Museum. He was one of the founders of 

 the Cosmos Club in 1878, of the Biological Society in 1880, and 

 of the District Audubon Society in 1897. He served as the first 

 president of the Biological Society in 1881 and 1882, as chairman 

 of the Committee on Publications in 1894-95, and frequently pre- 

 sented papers and took part in the discussion of papers presented 

 by others. It made little difference what subject was under con- 

 sideration, Gill could almost always add something to the infor- 

 mation imparted by the speaker. On one occasion when a paper 

 on Cretaceous fishes was presented, Doctor Gill dissented radically 

 from the views of the author of the paper and as a result the dis- 

 cussion soon waxed warm. No one in the audience except the 

 author and the critic had more than a superficial knowledge of the 

 subject, but every one present followed with deepest interest as 

 each participant in the debate sought to overwhelm the other with 

 fresh arrays of facts and polysyllabic names of fossils which none 

 save the speakers could understand. 



This is not the time or the place to attempt a review of Doctor 

 Gill's voluminous publications. The number of titles in his bibli- 

 ography exceeds 500, most of them on the subject of fishes. His 

 best known works consist of his x\rrangements of Mollusks, Fishes, 

 and Mammals, his volume on Fishes, and part of the volume on 

 Mammals in the Standard or Riverside Natural History, the con- 



