
pe 
uninfested cages yielded U. S. Grade 1. The price difference at Kansas 
City in 1928 and 1929 averaged $2.10 per ton. This decrease in quality 
caused losses averaging approximately 33 percent. The Bureau of Chemistry 
analyzed the hay in these samples and reported no significant differences 
in the percentage of water, ash, nitrogen, fat, and fiber composition." 
Fluosilicates in grasshopper baits.-—-J. R. Parker, Bozeman, Mont,, 
reports that "Barium and sodium fluosilicates were compared with dry so- 
dium arsenite as poison ingredients in grasshopper bait. Both these sub-— 
stances gave as good results as the sodium arsenite. The fluosilicates 
are apt to settle out quickly when in solution, owing to their slight de- 
gree of solubility. When used with a cane-molasses solution, a precipi- 
tate was found because the quantity which settled out was about one-fourth 
greater by weight than the original quantity of the fluosilicate. This 
seemed to affect the killing power of a low-grade brand of sodium fluosil- 
icate by making it practically worthless when used with cane molasses. 
However, the effectiveness of a finely ground material containing at 
least 97 1/2 percent of sodium fluosilicate seemed not to have been re— 
duced by the molasses solution. The fluosilicates were used at the rate 
of 4 pounds per 100 pounds of dry bran and the sodium arsenite at the 
rate of 2 1/2 pounds. So far the laboratory cage method is proving to 
be of value * * * cane molasses and amyl acetate need not be used together, 
but beet molasses is better when amyl acetate is added to it. Both cane 
molasses and amyl acetate, used alone, were better than just the bran, ar- 
Senic, and water. * * * from 20 to 30 percent greater mortalities were 
obtained when the baits were used with third, fourth, and fifth instar 
nymphs than with first and second instar nymphs. In other words, 20 
to 30 percent better kills were obtained with the older specimens than 
with the younger ones. This has been more or less substantiated by 
field experiences." | 
Morphology of parasite of the fall armyworm.—-Reporting on a 
study of Chelonus texanus Cress., C. C. Hill, Carlisle, Pa., says: "The 
newly laid egg is smooth, subcylindrical, and arcuate. The primary larva 
is cyclopeanlike in formation but before molting into the second instar 
its body enlarges many times over its primary size, while the head cap-— 
sule retains its original shape. The mandibles of the first-instar 
larva are simple and untoothed but those of later instars become con- 
Spicuously toothed, The egg is laid into the host egg and parasitic de-. 
velopment takes place synchronously with that of the host. The parasi- 
tic larva early in its development takes its position partly curled 
around the hind intestine. Eventually it gorges itself on the contents 
of the host and spins its cocoon within the cocoon of the latter." 
Hessian fly parasite is parthenogenetic.—-W. T. Emery, Wichita, 
Kans., reports that "Platygaster herrickii Pack. bred in the laboratory in 
February proved to be parthenogenetic. Hessian fly eggs parasitized 
January 24 by one unmated female were developed through to white puparia 
- and were dissected February 24. Several spherical forms of the parasite 
were found in a pupariun." 
