1901.] NATURAL SCIENCES OF PHILADELPHIA. 747 



special subscriptions, while many private individuals have con- 

 tributed results of their explorations to the institution. 



Under the former head may be mentioned the expeditions to 

 Bermuda in 1888, Mexico in 1890, under the leadership of Angelo 

 Heilprin; the Greenland Expeditious of 1891 and 1892; Prof. 

 Cope's trip through the fossil beds of the "West in 1893, and many 

 minor collecting ti'ips. 



Among private expeditions may be mentioned those of Dr. Ben- 

 jamin Sharp to Hawaii and Alaska, Dr. W. L. Abbott to Africa, 

 Dr. A. Donaldson Smith to Somaliland and Lake Rudolf, the 

 Messrs. Faruum to Mongolia, while Mr. Alfred C. Harrison and 

 Dr. H. M. Hiller are at present exploring Sumatra, partially in the 

 Academy's interest. 



Mr. Clarence B. Moore's archaeological explorations in Florida 

 and Georgia ; the exploration of the Port Kennedy fossil deposit, 

 in the years ] 894-96, under the direction of Dr. Samuel G. 

 Dixon, assisted by Mr. H. C. Mercer; Mr. C. W. Johnson's expe- 

 ditions to the Southern fossil beds, under the direction of Dr. L. T. 

 Chamberlain, and Mr. Henry G. Bryant's expeditions to Labra- 

 dor, Greenland and Alaska have also been productive of important 

 results. 



The increase in collections, especially since modern methods have 

 been instituted in the Museum, has been so continuous and impor- 

 tant that it is impossible even to summarize it in this brief space. 

 Some idea, however, may be gained from the statements furnished 

 by several special departments. 



The Ornithological collection, which was formerly regarded as 

 the Academy's most notable department, contained at the time of 

 Dr. Ruschenberger's last report 24,000 specimens; to-day it num- 

 bers 46,000. The Conchological department since 1887 alone has 

 added 30,000 lots to what was before regarded as the leading col- 

 lection in the world. Other collections have increased at nearly 

 the same rate, as illustrated by 6,000 additions to the department 

 of reptiles, mainly the private collection of Prof. Edward D. 

 Cope, and one prepared by Mr. A. E. Brown; 14,000 to the col- 

 lection of butterflies; the William S. Vaux Collection of Minerals; 

 the Isaac Lea Collection of eocene fossils, for which we are 

 indebted to the Rev. Leander Trowbridge Chamberlain, D. D., and 

 the Clarence B. Moore Archreological Collection. 



