49 
Result, five days later, plant and grub alike uninjured. A second 
application killed the plant but not the grub. 
Experiment No. 3.—Placed grub about root of plant May 14; two days 
later applied fresh unleached ashes to surface of ground in sufficient 
quantity to cover lightly. 
Result, five days after, plant and grub alike uninjured. 
Reperiment No. 4.—Single grub placed about roots of plant May 14; 
two days later applied 4 ounces gas-tar water. 
Result, next day, plant killed; grub uninjured. 
Hxperiment No.5.-—Single grub placed about roots of plant May 14; 
twodaysafter earth about roots thoroughly saturated with tobacco water. 
Result, five days after, plant and grub alike uninjured. 
EHxperiment No. 6.—Single grub placed about roots of plant May 14; 
two days later applied 1 drachm Diamond soluble bone* in solution. 
Result, six days later, plant and grub unaffected by application ; 
grub eating off the roots. 
Experiment No. 7.—Grub placed about roots of plant May 14; two 
days later 4 ounce carbon bisulphide poured in hole made in earth near 
roots and immediately refilled with earth. 
Result, second day after, plant and grub both dead. 
EKxperiment No. 8.—Single grub placed about roots of plant May 14; 
two days after thoroughly saturated the soil with ammonial water of 
1.025 specific gravity, 2.68 per cent. ammonia reduced 75 per cent. 
Result, three days after, piant killed but the grub was alive and active. 
Huperiment No. 9.*—One grub placed about roots of plant May 22 
and one drachm of phosphate salt applied in solution to the soil about 
roots. On 23d, corn was being destroyed by the grub and the next day 
the plant was wholly eaten off while his grubship appeared uninjured. 
Experiment No. 10.t—Single grub placed about roots of plant and one 
drachm of fertilizing salt applied in solution to soil about roots. 
Result, two days later, plant withering, grub all right but had not fed 
from plant. which soon died. 
Experiment No. 11.—Grub placed about roots of plant May 22; soil 
at once saturated with solution of powdered Pyrethrum and water ; 
1 ounce of powder to gallon of water. 
Result, two days later, neither plant nor grub injured. 
Experiment No. 12.—Grub placed about roots of plant May 22; next 
day the soil about the roots was drenched with decoction of Burdock 
leaves. 
* Analysis: Per cent. 
Walla en OspHOr Gra Cl Cea nstsecinisce oe-inie snc ecinuaseeeelas ee -mele ee ai 13 to 15 
ihisolnialeEphosphonie aelden eames ese ea nice ome ee sueiecee == eee = lto 3 
ANE et eee ne a Grn ee Ne sear enic nae mnie oie anim craielay sie atafemisiesaaiapsijes Sa. LOnuOnhg 
JN BRTNOIN AS GSS Sept SEL OE aE TO ee ee i eR ea ARDY oct | 
-tThe phosphate salt and fertilizing salt used in experiments 9, 10, and 14, were sent 
to the Indiana experiment station by the manufacturer, E. S, Fitch, Bay City, Mich., 
23479—No, 22——4 
