1913.] 
NATURAL SCIENCES OF PHILADELPHIA. 
701 
number of valuable specimens to his collection. The general archaeo¬ 
logical collection has benefited as heretofore from the attention of 
Miss H. N. Warded. 
Mr. Henry W. Fowler has, as usual, cared for the ichthyological 
collection and has also incorporated all of the additions to the col¬ 
lection of reptiles and amphibians and examined and rearranged 
the entire series of alcoholic crustaceans. 
Dr. J. P. Moore has cared for the collections of worms as in previous 
years. 
Work in other departments is described in the appended special 
reports. 
In addition to the work of the museum staff, the Curators are 
indebted to Mr. F. J. Keeley for the care of the Wm. S. Vaux col¬ 
lection of minerals; to Mr. Morgan Hebard for furnishing an assistant 
in the entomological department to mount specimens of Orthoptera; 
to Dr. Amos P. Brown for the identification of many specimens of 
invertebrate fossils, and to Messrs. S. S. VanPelt and Bayard Long 
for the care of the local herbarium. 
Several notable expeditions have been undertaken by members 
of the museum staff. 
Dr. H. A. Pilsbry spent the first three months of the year in the 
Hawaiian Islands making studies and collections for a monograph 
of Hawaiian tree snails. Details of his work will be found in the 
special report appended hereto. 
Mr. J. A. G. Rehn spent the month of July with Mr. Morgan 
Hebard investigating the Orthoptera of the Southern States from 
Virginia to Georgia. They made a valuable joint collection. 
Mr. Stewardson Brown again visited Bermuda in company with 
Dr. N. L. Britton, in September, and continued the investigation of 
the flora of the island. 
Many short trips were also undertaken which have added largely 
to the local collections of fishes, reptiles, insects, mollusks, plants, etc. 
Fifty-two storage cases and two-hundred and two insect boxes 
have been purchased during the year. 
Many valuable additions have been received by gift, purchase, and 
exchange, as set forth in the accompanying list of accessions. 
The Delaware Valley Ornithological Club, Philadelphia Botanical 
Club, and Pennsylvania Audubon Society have held their meetings 
regularly at the Academy during the year and the American Asso¬ 
ciation of Museums convened here for their annual meeting in April. 
The attendance in the museum is constantly increasing, especially 
