402 
The Ohio Naturalist. 
[Vol. Ill, No. 5 , 
MEETING OF THE BIOLOGICAL CLUB. 
Orton Hall, February 2, 1903. 
The first paper was given by Prof. Dresbaeh, on “Some 
Peculiar Variations in Blood Corpuscles.” He reported finding 
a person whose blood corpuscles are elliptical. Their dimen- 
sions are as follows : 
Greatest width, 4.8/*. Greatest length, 10.3/x. 
Average width, 4. i/x. Average length, 10. /x. 
Average thickness through center, 1.3/1. 
Average thickness through edge, 2.7/x. 
Ratio of width to length, from 1:2 to 1:3.1. 
The average human corpuscle is 7.2/x to 7.8/x in diameter. 
The scond paper of the evening consisted of a review of the 
life of Pasteur, by Mr. Landacre. After dealing with the main 
facts of his life, especial emphasis was laid on two phases of it ; 
first, the directness of his method in research. Almost every 
great discover}- Pasteur made was first undertaken as the result 
of influences brought to bear on him by others. The reasons for 
beginning researches with him were usually economic. His life 
seems to be a refutation of the current belief that the best scien- 
tific work can be done by allowing each man to follow his own 
inclination. v Second, there was a remarkable sequence in his 
researches. Each one grew out of the preceding problem. And 
yet it was always the practical side of a problem that attracted 
his attention. 
Under personal observations, Dr. Kellerman spoke of the 
abundance of Chaerophyllum proaimbens along the Olentangy. He 
noticed that almost every plant was very badly infected with a 
black rust. They have a red rust in spring and later a black 
rust, but it is unusual to find them infected in winter. He also 
spoke of his inoculation experiments with rusts and gave a sum- 
mary of his paper, which is published as a University Bulletin, 
Series 7, No. 11. (Botanical Series, No. 12.) 
Mr. Mead reported on the examination of the flora of a mound 
near Chillicothe. It had been reported that there were some 
peculiar plants growing near it. His investigations, which 
included the determination of the whole flora, showed, however, 
that there were no plants present the occurrence of which was at 
all unusual. 
Prof. Schaffner exhibited some mangrove embryos from Florida 
and remarked upon the habits of the plant. 
Prof. Osborn gave a note on a report concerning the campaign 
against mosquitoes on Long Island. This is published on p. 377 
of the February number of The Naturalist. 
Robert F. Griggs, Secretary. 
