Paleontology 693 



Whitfield, these occupying seventy-two pages. An index of 

 genera and species of invertebrate fossils occupies fifty-two 

 pages. The work is supplied with a general index of sub- 

 jects and authors, and forms an octavo volume of over three 

 hundred pages. 



In accordance with its policy, the Institution subscribed in 

 1857 for a few copies of a work on "The Pleiocene Fossils of 

 South Carolina," by M. Tuomey and F. S. Holmes. This 

 work received the commendation of some of the distino^uished 

 members of the American Association for the Advancement 

 of Science, at its meeting in Charleston, in 1850, and its pub- 

 lication was undertaken at the risk and cost of the authors. 

 To aid this enterprise, the Institution was induced to make 

 the subscription above mentioned for copies to be distributed 

 to foreign societies. 



In 1856 the Institution considered favorably the proposition 

 made by Doctor James Deane, of Greenfield, Massachusetts, 

 to publish a memoir containing a series of illustrations of his 

 researches relative to the celebrated fossil foot-prints in the 

 sandstone of the Connecticut valley. The number of plates 

 required to illustrate the memoir, as originally proposed, would 

 have involved too great an expense to be met in one or even 

 two years by the portion of the income of the Institution which 

 could be appropriated to any single publication. It was, 

 therefore, concluded that Doctor Deane should continue his 

 investigations, and endeavor, by means of photography, to 

 produce representations of all the most important specimens, 

 and that from these a selection should be made sufficient to 

 illustrate the characteristics of the different species of animals 

 by which the impressions had been left. To assist in the 

 experiments of photography and in lithographing the illus- 

 trations, a small appropriation was made, with which about 

 fifty drawings were finished on stone by Doctor Deane before 



