46 
Prof. John A. Dakin delivered an address entitled: 
VARIATIONS IN THE PLUMAGE OF BIRDS. 
The lecture was illustrated with many specimens of birds 
by means of which the speaker showed how the form, size, and 
character of the birds and of their plumage varied under different 
conditions. 
Additional remarks were made by Dr. C. W. Hargitt, Dr. 
H.-A. Peck, Mr. George Lynch, and’ Mr. AY Permuer 
Mr. Perrior presented to the academy a copy of the report 
on the Migrations of Birds observed in this vicinity during the 
present season, which had been prepared for the U. S$. Depart- 
ment of Agriculture. 
Several hundred copies of an eight-page pamphlet, the sec- 
ond in the Science Series, entitled, ‘‘ The Marcellus Fault,’ were 
presented to the academy for distribution by Philip F. Schneider. 
The meeting adjourned to the Holden Observatory where 
Dr. Henry A. Peck explained the uses of the various astronom- 
ical instruments. 
SEPTEMBER 22, 1899. 
THIRTY-THIRD REGULAR MEETING. 
The president, Dr. JouN VAN Duyn, in the chair. 
Twenty-five persons present. 
Mrs. L. Leonora Goodrich reported the discovery of a new 
plant,Polyganum lapathi-folium, during the summer. 
Prof. John D. Wilson spoke about “ Birds’. He believed 
that if we were more thoughtful of them we would enjoy them 
better. He related experiences which were intended to show that 
if we make the birds feel that we are their friends they would 
readily associate with man. 
