NATURAL SCIENCES OF PHILADELPHIA. 
805 
1902 .] 
notice have been purchased. Among them may be specially 
mentioned a specimen of the water-enclosing chalcedony from 
Brazil, enclosed in a gangue of igneous rock, and two remarkably 
tine crystals of epidote from Prince of Wales Island, Alaska. 
Besides the services rendered by the salaried Museum Staff, the 
Curators would express their indebtedness to Messrs. Theodore D. 
Rand, Lewis Woolman, Philip P. Calvert and Charles Liebeck for 
aid in various departments, and to the students of the Jessup Fund, 
Messrs. E. G. Vanatta, J. A. G. Rehn, Ii. L. Viereck and Miss 
H. N. Wardle. 
A large number of specialists have visited the Academy during 
the year for the purpose of studying the collections and material 
has been loaned to the following: J. Dwight, Jr., G. S. 
Miller, Jr., William Brewster, W. B. Scott, H. F. Osborn, W. 
T. Hornaday, T. Way laud Vaughan, J. X. Rose, M. W. Lyon, 
J. W. Gidley, Robert Ridgway, W. H. Dali, C. D. Beadle, H. 
C. Oberholser, B. G. Wilder, W. B. Clarke, F. A. Lucas, C. W. 
Richmond. 
REPORTS OF THE SECTIONS. 
Biological and Microscopical Section. 
The regular monthly meetings of the Section have been held with 
an attendance larger than that of last year. Several new members 
have been admitted.' 
Numerous communications were made as follows: By Mr. John 
W. Palmer upon malarial fever in the Philippines and upon collec- 
tions of diatoms made in the same locality; by Dr. T. S. Stewart 
upon smallpox and bacteria; by Dr. J. Cheston Morris upon var- 
ious pathological subjects, including Texas fever and vaccine virus ; 
by Mr. John A. Sliulze upon mounted specimens of diatoms; by 
Mr. T. C. Palmer on Trachelomonas ; Mr. Silas L. Sehumo on 
Mosses; Mr. Hugo Bilgram and Mr. Harold Wingate on Myxo- 
mycetes; Mr. Lewis Woolman on microscopic organisms in recent 
artesian well borings, and Mr. William B. Davis and Mr. C. S. 
Boyer on diatoms. 
