ea 
Ld 
 theļBotanical Gazette, Nol. XV., p- 291, 
ing excellent material for the d "e 
_ also recommended the beetle Dytiscus for exhibitin 
1891.] Proceedings of Scientific Societies. 185 
open end downwards, in 50 percent. alcohol. In about rz hours the 
chromic acid will have been extracted, and the tube is then transferred 
for another 12 hours to 80—90 per cent. alcohol. 
Finally, to get rid of the air-bubbles which sometimes form in the 
cavities of the nectocalyces, it is recommended that the specimen, 
before being placed in alcohol, should be transferred for a time to well- 
boiled sea-water, so that the air contained in the tissues may, to a cer- 
tain extent, be dissolved out.—J. PLayraiR McMurricu. 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
The Western Society of Naturalists held its annual meeting 
Noy. 12th and 13th, 1890, in the Physical Laboratory of Purdue 
University, Lafayette, Ind. Inthe absence of the president, Prof. C. R. 
Barnes occupied the chair. ‘The report of the treasurer showed a bal- 
ance on hand of $36.70. The presidential address by Chancellor C. E. 
Bessey dealt with ‘General Culture as an Object in Teaching Science.”’ 
The society then discussed, ‘‘ What science, and how much science, 
shall be required for entrance to college classes?’’ The general con- 
clusion was that it did not much matter what science was required so 
out the nucleus and the cell-wall in a beautiful manner. 
is better for plant-tissues than chloroform, while a solution of Bismarck 
brown in turpentine stains too diffusely. Professor Hargitt exhibited 
a warm stage of his own construction, and described his method o 
making permanent mounts of Infusoria. He killed the species 
with Lang’s fluid and stained with borax carmine. Dr. Kingsley de 
scribed a new method of making serial sections with celloidin. Many 
scribed a lens support and directed attention to 
= emonstration of muscle growth. He 
g the phenomena 
