Pee. JOURNAL. 
NINN WEY O ATRL NTO 
PROCEHDENGS OF THE SOCLETY. 
Turspay EVENING, October 2, 1883. 
Business meeting. 
President Hunt in the chair, sixteen members present. 
The minutes of the preceding regular business meeting, for April 
(the July meeting being passed for want of a quorum) were read and 
approved. 
The minutes of the executive board for July, August and September 
were read. 
Mr. Chas. Dury read a paper on the “ New Museum Pest”’ ( Tyro- 
glyphus entomophagus), which had of late been destroying his collec- 
tions of insects. The only substance which seems to affect the mite 
is napthaline. This destroys it. The paper was referred for publi- 
cation. 
Mr. Dury exhibited quills of the Porcupine, showing their various 
forms. 
Dr. A. E. Heighway exhibited a fine collection of minerals and 
geyser deposits from the Yellow Stone Park, and gave an account of a 
visit he had lately paid to that region. 
Dr. F. W. Langdon showed a specimen of the incisor tooth of the 
extinct beaver, Castoroides ohioensis (a note respecting it will be 
found in another page of the Journal). 
Prof. J. Mickleborough showed a specimen of a fossil belonging to 
the Chemung group, Leiorhynchus kelloggt, from the drift near Ham. 
ilton, Ohio. 
Mr. T. H. Aldrich presented the society with a specimen of the rare 
shell, Voluta junonia, L., from Tampa Bay, Fla. 
