234 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 13 
the bait where these materials are used, and it is possible that the use 
of legumes has not added very greatly to the attractiveness of the bait 
in the experiments just reported. However, no work was done which 
would give a comparison with bran, Paris green and water alone. The 
eight tests reported seem to show conclusively that the addition of the 
ground legumes to the water used in mixing the bran and Paris green 
bait renders it fully as attractive as does the addition of molasses and 
ground fruits, in the quantities usually recommended. 
The following table shows the number of dead grasshoppers found in 
✓ i 
five square yards, on examining the fields where the different baits had 
been applied. 
There are certain situations in which it is not desirable to use the 
poison bran baits. Some of these are roadsides, ditch banks, and like 
places, covered with a growth of large tall weeds; gardens and truck 
patches in the vicinity of dwelling houses, where the owner may. not 
wish to use the bran bait for fear of killing chickens or wild birds; 
although there seems to be very little, if any, evidence to show that 
birds are ever poisoned by this mixture. Several years ago the writer 
noticed the fact that grasshoppers feed readily upon paper, especially 
the heavy brown wrapping paper such as is generally used in stores for 
wrapping heavy parcels. It seemed that it might be possible to treat 
papers with a poisonous solution to which some substance attractive 
to grasshoppers had been added, and that such papers if fed upon by 
the hoppers would prove effective in killing them. It was thought at 
first that the soluble poisons would be best to use in this way, and that 
papers soaked in such solutions would probably absorb sufficient poison 
to render them effective in killing the grasshoppers should they feed 
upon them. A few tests with papers soaked in solutions of one gallon 
of molasses, two pounds of sodium arsenite and 32 gallons of water failed 
to kill any grasshoppers, although the insects fed upon the papers in 
large numbers, and continued to feed upon them for several days. A 
solution was made in the same proportions, but substituting for so¬ 
dium arsenite, crude arsenic containing about 10 per cent water sol¬ 
uble arsenic. A few grasshoppers were killed by feeding on papers 
soaked in this solution, although this was not nearly as effective as the 
standard poison bran mash. As the grasshoppers fed readily upon the 
papers, and still but poor results were obtained as far as actual number 
killed was concerned, it was thought possible that an insoluble poison 
would increase the effectiveness of this method of treatment. Conse¬ 
quently an experiment was tried using Paris green in place of the more 
highly water soluble poisons. In these experiments several old news¬ 
papers were torn into pieces about four inches square, and soaked for 
one-half hour in a mixture of one gallon water, one-fourth cup molasses, 
