24 
Annual Reports of Academy of 
and obtained a large number of valuable additions to the miner- 
alogieal collections. 
Details of work in the several departments and accessions for 
the year follow: 
Mammals. 
Many specimens have been received from the Zoological Society 
of Philadelphia which have been variously prepared as skins, skel¬ 
etons, or mounts. An important collection of game heads was re¬ 
ceived from Miss Anne Thomson, formerly the property of her 
brother the late Frank Thomson. Certain of the Californian jump¬ 
ing mice in the collection have been studied during the year by 
Dr. Joseph Grinnell; and the entire series of western chipmunks 
has been loaned to the U. S. Biological Survey for study in con¬ 
nection with Mr. Howell’s monograph of this group. 
Birds. 
A fine series of birds and eggs collected at St. Marks, Florida, 
by Mr. C. J. Pennock was purchased during the year, and many 
specimens presented by the Zoological Society of Philadelphia 
were prepared as skins or osteological specimens. The valuable 
collection of East African birds obtained by Mr. Geo. L. Harrison, 
Jr., in 1903, and which had been deposited in the Academy, has been 
generously presented by him. A valuable series of eggs and nests 
of Pennsylvania birds was received in exchange from Mr. R. C. 
Harlow. 
The entire series of bird skins was carefully examined during the 
year and found to be in excellent condition. The collection of 
eggs was entirely rearranged and several families of birds critic¬ 
ally studied. A unique collection of local birds, beautifully mount¬ 
ed on hard wood bodies in glass covered boxes was presented by 
Mr. Edward Mattern. This it is proposed to complete and use 
for the exhibit of bird life which has been a feature of the Museum 
in the past two seasons, during the period of spring migration. 
The Curator has received from Princeton University the re¬ 
mainder of the birds obtained on the Patagonian Expedition and 
has been engaged in completing the report on this collection for 
the series being published by that University. 
