330 
The Ohio Naturalist, 
[Vol. V, No. 6, 
flowers is also valuable. Mr. Scholl exhibited a fine line of 
sample of the various by-products of cotton seed. 
Mr. Dresbach presented a paper on the “ Form and Structure 
of the Red Blood Corpuscle.” Weidenreich of Strassburg con- 
tends that the mammalian erythrocytes are not biconcave but 
bell-shaped. His conclusions are based: (1) upon the fact that 
when the corpuscles are fixed with osmic acid, immediate!}’ upon 
escaping from the blood vessels, the great majority have the bell 
form ; (2) the corpuscles have this form in isotonic solutions as 
a .bd% NaCl solution for mammalian corpuscles; (3) Weiden- 
reich claims to have seen the bell-shaped cells in the circulating 
blood of the rabbit. He concludes that the biconcave form is 
due to the extreme sensitiveness of the corjjuscle and is pro- 
duced by slight increase of the density above the normal. As to 
the structure of the corpuscles, Weidenreich thinks that they 
consist of a distinct cell w’all which encloses the haemoglobin 
and other constituents. The behavior of the cells in such fluids 
as water, salt solutions, tannic acid solutions, etc., points to the 
presence of a cell wall. No stroma or framework exists. Mr. 
Dresbach also reported that an extended study of the case of 
elliptical human red corpuscles, which he described last year has 
confirmed his opinion that the extraordinary shape was normal 
in the subject and not due to any known disease. It was prob- 
ably of embryonic origin or possibly congenital. 
Mr. Metcalf reported the probable occurence of the Swamp 
Sparrow in Ashland County in the latter part of December. He 
also reported the Kildeer, Canvas Back Duck and Horned Grebe 
observed at the same time as unusually late. 
The club adjourned to meet the first Monday in March. 
F. M. SuRF.\CE, Sec. 
Date of Publication of April Number, Apr. I 24, 1905. 
