=—2O8—— 
Prof. Cook then read an extract from a Bulletin of the Michigan 
Agricultural College concerning spraying with the arsenites, showing 
that London purple in his experiments had injured foliage more than 
Paris green. 
A long discussion followed concerning the injury of foliage by the 
application of the arsenites, in which various opinions were expressed, 
the most important point brought out being the necessity of an exhaust- 
ive investigation of the whole subject. 
Prof. W. O, Atwater, of the Office of Experiment Stations of the 
Department of Agriculture, was then introduced to the Club, and gave 
a pleasant talk, especially with reference to the co-operation of his office 
with the recently organized Association of Official Economic Entomo!- 
ogists. 
The election of officers then took place with the following result : 
President, A. J. Cook ; Vice-President, C. J. S. Bethune ; Secretary, F. 
M. Webster. 
On motion of Mr. Smith the secretary fro. /em. was authorized to 
publish the proceedings of the Club in EnromoLocica AMERICANA. 
The Club then adjourned to meet after the adjournment of the Bio- 
logical Section, A. A. A. S. 
On re-assembling, Mr. L. O. Howard read a paper entitled ‘‘On 
the Parasites and Predaceous Enemies of the Grain Plant-louse ” in which 
he reviewed the previous literature and discussed at some length the 
rearing by the Division of Entomology, U.S. Department of Agriculture, 
of nine true parasites of Siphonophora avene. Illustrations of all of the 
species were exhibited, together with a full series of specimens. The 
paper was discussed by Mr. Saunders and Prof. Cook. 
Mr. H. H. Lyman read a paper on ‘‘ Variation in the genus Calli- 
morpha,” in connection with which he exhibited a large series of speci- 
mens and discussed at length the question of specific limitations. The 
paper was discussed at length by Prof. J. B. Smith. 
A letter from Mr. Wm. H. Edwards was then read by the Secretary, 
giving the results of breeding experiments for the season. 
The Club then adjourned sze de. 
CLARENCE M. WEED, 
Secretary pro tem. 
