1895. ] NEW YORK ACADEMY OF SCIENCES. 71 
REGULAR MEETING. 
January 14th, 1895. 
The Biological Section immediately organized in the absence 
of regular business, Professor Brirron presiding. An attend- 
ance of fifty. The minutes of the previous meeting of the Sec- 
tion were read and approved. 
A paper was read by Mr. R. H. Cunningham, ‘On the sources 
of Illumination for Photo-micrography, with special reference to 
the Are light.” Discussion followed in which Drs. Piffard and 
Laudy took part. 
Mr. C. F. Cox ina following paper discussed some of the latest 
theories of diatom structure, exhibiting a series of slides of pho- 
tomicrographs, mainly of broken frustules, which he had received 
from Mr. T. F. Smith while in London. 
Mr. O. 8S. Strong spoke briefly on his recent modification of 
the Golgi method in nerve-histology, and exhibited a number of 
photo-micrographs of his preparations. 
These had been taken by Dr. Edward Leaming, who in the 
first paper of the evening showed a number of photographic 
slides of his recent work. A series of slides illustrating the 
fertilization phenomena of the Sea-urchin, Toxopneustes, taken 
from Dr. E B. Wilson’s preparations, proved especially note- 
worthy. BASHFORD DEAN, 
Recording Secretary of Biological Section. 
SrarED MEETING. 
January 21st, 1895. 
The Academy was called to order by Vice-President Wu1rt- 
FIELD, twenty-five persons being present. The minutes of the 
last meeting were read and approved. 
Prof. D. 8. Martin called attention to the death, the previous 
week, of Mr. George N. Lawrence, one of the oldest and most 
