1902.] NATURAL SCIENCES OF PHILADELPHIA. 805 



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 

 fine 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 Lriebeck for 

 aid in various departments, and to the students of the Jessup Fund, 

 Messrs. E. G. Vanatta, J. A. G. Rehn, H. 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. Horuaday, T. Wayland Vaughan, J. N. Rose, M. W. Lyon, 

 J. W. Gidley, Robert Ridgway, W. H. Dall, C. D. Beadle, H. 

 C. Oberholser, B. G. Wilder, W. B. Clarke, F. A. Lucas, C. AY. 

 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 iu 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. Shulze upon mounted specimens of diatoms; by 

 Mr. T. C. Palmer on Trachelomonas ; Mr. Silas L. Schumo 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. 

 Bover on diatoms. 



