64 Ai ay 
one which combines the proportions so that no excess of either ingre- 
dient results, for, as indicated, the hardening of the thick soapsuds re- 
sults in clots and these interfere with spraying, while to skim off the 
emulsion and leave the mass below is a useless labor and loss of ma- 
terial. . 
In the Riley-Hubbard formula we have evidently the exact propor- 
tions carefully determined, and I feel obliged to recommend this formula 
when giving advice to those wishing instructions as to preparation of 
kerosene emulsion. 
Mr, Wallace read a note of which the following is an abstract: 
A NOTE ON SILK CULTURE. 
By PAUL WALLACE, Los Angeles, Cal. 
[Secretary’s abstract. ] 
The author reviewed the attempts which have been made to raise 
Silkworms in this country, and stated that they had proven the entire 
adaptability of the United States to this industry. He stated that all 
that was needed to make it a success was either a bounty paid by the 
Government or an import duty upon raw silk, but to his own personal 
knowledge attempts in this direction were thwarted by the work of 
large silk manufacturers who were bitterly opposed to the establish- 
ment of silk culture in America. He urged that the Association 
should use its best efforts to foster a popular sentiment antagonistic 
to such efforts on the part of the manufacturers of silk. 
Mr. Lintner, in discussing this paper, contended that there is no 
question as to our ability to raise good silk, but that it will not pay. 
He spoke particularly of the work of the division of entomology in 
experimenting in this direction. 
Mr. Cook read the following article by Mr. G. C. Davis: 
NOTES ON A FEW BORERS. 
By G. C. Davis, Agricultural College, Michigan. 
If we go on the principle that ‘‘ every little helps,” even though it be 
slight and incomplete, then perhaps a few notes incidentally picked up 
on our forest borers may be of some utility atthistime. Dr. Packard’s 
work on forest insects, so recently issued, is of inestimable value to the 
working entomologist, but by the reporting of the few observations we 
happen to make while at our other work we can make the volume still 
more complete and helpful. Perhaps the habits of some of these 
species may already be known, but as they have not been specially re- 
ported in this work, reference is here made to them. 3 
