409 
which for the first time in the history of the Club now appeared 
Printed in the regular daily program of the A. A. A. S., the 
reading of the minutes of the previous meetings was dispensed 
with. 
The first paper presented was on “Crimson Clover Hair-balls,” 
by Mr. F. V. Coville. These balls, composed of the hairs of the 
Crimson Clover, Trifolium incarnatum, had been found in the 
stomach of ahorse. Mr. Coville exhibited specimens, also mounted 
slides showing their composition. 
Professor Byron D. Halsted reported the results of field ex- 
Periments with beans. He had found that 25 per cent. of plants 
stown on soil previously occupied by beans were affected by spot, 
Whereas when grown on new soil only 6 per cent. were diseased. 
Mrs, Elizabeth G. Britton reported corrections upon descrip- 
tions of Coscinodon. 
Mr. O. F. Cook remarked upon “A peculiar Habit of a Li- 
berian Species of Polyporus,’ and exhibited specimens showing 
various degrees of prolification, one pileus arising from another 
upon very extended delicate stalks, due perhaps, to the extreme 
Moisture of their environment. 
An apparatus for the bacteriological sampling of well-water 
was described and illustrated by Professor H. L. Bolley, the merits 
of which were facilities afforded for sterilization in toto, and in 
general accuracy of work afforded without contamination by air 
and water. 
Mr. C. L. Pollard described the methods of work in the Na- 
tional Herbarium. The colored labels in use to designate type 
Specimens were of especial interest, because of the new range offered 
for convenience of reference. 
Passing to order of unfinished business Dr. Trelease called for 
the report of the committee appointed at the Rochester meeting 
to prepare and print a check list of the plants of northeastern 
North America. Dr. N. L. Britton, as chairman of the committee, 
Submitted the appended report: 
_ “The committee reports that it has completed the task as- 
Signed it by the Club at its Rochester and Madison meetings, by 
Preparing, to the best of its ability, a list of plants in accordance 
With instructions received at those meetings. The committee 
