with the former collection and has added largely in numbers and 
interest to the department. The collection now compares favor- 
ably with the most important of its kind in the country. 
The collections of gems and gem material presented by 
J. Pierpont Morgan, Esq., has been arranged and displayed in 
cases specially constructed for this gift. It presents a most 
attractive appearance, and a more instructive illustration of the 
uses of gem stones than any similar collection. 
The large mass of copper ore, taken from the Anaconda Copper 
Mine, Butte, Montana, is displayed in the west wing ; its weight 
is 6041 pounds and it is especially rich in both copper and silver. 
The Trustees are indebted to Mr. James B. Haggin for this unique 
and valuable specimen. 
Examples of gold and silver ores have been received from Mr. 
D. O. Mills. Specimens of phosphate rock used for artificial 
fertilizers were presented by Mr. N. B. Powter, and a collection 
of Corundum " Emery Ores," and samples of the manufactured 
articles, by L. Best, Esq., of the Sterling Emery Wheel Co. of 
this city. 
The Conchological Department has been increased by 
material added from the extensive collection donated by John J. 
Crooke, Esq., previously acknowledged. The valuable gift of 
shells from Mr. D. Jackson Steward was also placed on exhibition. 
This collection is notable for the extreme beauty and perfection 
of the specimens, and contains a large number of very rare 
examples. 
Department of Mammals and Birds. — The collections have 
been increased during the year mainly through donations; 1100 
mammals, 400 birds, and 150 reptiles and fishes have been added. 
The principal gifts have come from Mr. George B. Sennett, Dr. 
Edgar A. Mearns, U. S. A., and Mr. Leverett M. Loomis, of 
Chester, S. C. Other important accessions have been received 
from the late Cyrus W. Field, Mr. C. B. Cory, of Boston, and Mr. 
Robert H. Lawrence, of Oregon. As usual, many valuable speci- 
mens have been received in the flesh from the Central Park 
Menagerie, through the kindness of the Park Commissioners. 
