Report of the President 61 



lection were turned over to Director Britton and Dr. Arthur 

 Hollick of the New York Botanical Garden. 



With the assistance of Mr. Lloyd W. Maxwell for three 

 months, a large number of invertebrate lots in the Hunton 

 collection from Oklahoma was sorted, and the species named. 



The most important accession of the year was the complete 

 fall of the Burkett siderite. Other valuable accessions were 

 the donations of Miss A. K. Harned of no speci- 

 sssions mens £ Qoi^ Silver, Lead and Copper ores from 

 Colorado; Mr. E. J. Valeur's thirty-five rock specimens and 

 two slabs containing Tertiary fossils from Santo Domingo; 

 Mr. Samuel Howard's fourteen samples of marble from 

 Alaska, Texas and Vermont; samples of marble were also 

 donated by the Middlebury Marble Company and by Mr. 

 Thomas T. Callahan of Gouverneur, N. Y. Excellent fossil 

 specimens were presented to the department by Dr. L. Hussa- 

 kof, Mr. Charles Platz and Mrs. Georgia M. Clapham. 



Two scientific papers and a number of abstracts of papers 



presented before the Geological Society of Amer- 



jca and the New York Academy of Sciences have 



been published by members of the department during the year. 



MINERALS 



Department of Mineralogy 



L. P. Gratacap, Curator 



The Morgan Collection of Gems and the Bement Collection 

 of Minerals have become distinct educational assets to the city. 

 They were visited during October, November and December, 

 1916, by more than 26,000 people. It is apparent that these 

 figures strongly reinforce the suggestions made in our last 

 annual report as to what might be the overwhelming effect of 

 an adequate installation of the Gem Collection and its enlarge- 

 ment. 



From observation it is almost certainly to be inferred that 

 a greater number of students, in a real sense, make use of the 



