14 
recover. In windy weather the evaporation is also rapid, and the deadly 
properties of the Buhach are lost, being blown away from the insect, in- 
stead of being kept where the latter is compelled to breathe it. 
The following experiments with Buhach were made the past season 
either by myself or where I was permitted to witness them in person: 
Tomato worms—the larvie of Macrosila carolina, Linn.—sprayed with 
a solution composed of one pound of Buhach stirred in ten gallons of 
water were killed in a few minutes by it. When first sprayed they mani- 
fested their dislike by jerking their heads and the forepart of the body 
from side to side, at the same time emitting from their mouths a dark 
greenish, semi-liquid substance, as almost every locust or grasshopper 
will do when taken in the hand. The jerking gradually increased in 
violence, until finally the worms let go their hold of the plants and fell 
to the ground, where they wriggled around for a short time, and finally 
expired. Iam not aware that a single tomato worm treated with the 
above solution recovered from its effects. 
The above solution appeared to have no effects upon a Bordered Squash- 
bug (Largus succinctus). 
At about 4 o’clock in the afternoon a Twelve-spotted Diabrotica (Dia- 
brotica duodecim-punctata Fabr.) was immersed in a solution composed 
of one and one-half pounds of Buhach stirred into five gallons of water ;. 
it was still alive at 9 o’clock, but was dead when examined the next 
morning. 
A horned beetle (Notoxus cavicornis LeC.) was immersed in the same 
solution and at the same time as the above; it was still alive at 3 o’clock 
in the afternoon of the next day, but was dead when examined the fol- 
lowing morning. It became unable to walk about five minutes after it 
had been immersed, and it remained in that condition, occasionally 
moving a leg or foot, until it died. Another specimen was sprinkled 
with the dry powder, but was not killed thereby; this would seem to in- 
dicate that Buhach wetted so as to adhere to the insect is far more eftect- 
ive than in a dry state, even though it is diluted to a considerable ex- 
tent with water. 
A black cricket (Gryllus sp.?) sprayed with the above solution in the 
evening was dead the next morning. 
An Eleodes quadricollis Le©. that had been rolled in the pure Buhach 
was still alive eight days later, although it did not appear to be as. 
sprightly as it was before being treated with the powder. 
A single application of Buhach, either in a dry state or when mixed 
with water or with alcohol, will not kill locusts or grasshoppers that 
have been dusted or sprayed with it. When treated to the powder or 
to either of the solutions they show signs of its effects in from ten min- 
utes to half an hour. At first the hind legs are affected, and the in- 
sects raise them over their backs and kick around for a short time, and 
finally lose all control of them, crawling about by means of their four 
anterior legs, and dragging their hind legs aftert hem. After a while 
