i6 
The Colorado Experiment Station 
wished. Only occasionally would one peck at the bran and then only des¬ 
ultorily. None showed any signs of poisoning. 
“Reports have come to the writer of chickens dying from eating 
grasshoppers, both alive and poisoned. Such deaths were evidently due 
to over-eating of a food to which the fowls were not accustomed.” 
Experiments were conducted the past season in Rio Grande 
County relative to the liability of poisoning - pigs and cattle, and 
no ill resulted. *Figs. 2 and 3.) These experiments consisted in 
letting pigs and cattle graze on areas over which bran mash had 
Fig. 2.—Part of ai dairy herd in the San Luis Valley, where experi¬ 
ments were conducted relative to the liability of poisoning domestic ani¬ 
mals by use of Paris green-bran mash, when properly applied in grass¬ 
hopper control, 1916. (Original). 
been strewn. In one case, 135 hogs grazed on 15 acres of poisoned 
alfalfa. On the third day, one pig died, but the post mortem ex¬ 
amination showed no signs of poisoning. However, some stock 
died from poisoning, but upon investigation it was found, in all 
cases, that the poisoning occurred thru carelessness. One case, 
for instance, was where two calves died from licking a tub in 
which the poison mash had been mixed. This tub was left in the 
yard where the calves were running. Had it been cleaned, or 
turned upside down, the poisoning would not have occurred. 
The following Kansas formula for poisoned bran mash for 
grasshoppers, developed by Professor M. F. Dean, is highly rec¬ 
ommended by all who have used it, and gave decided results the 
