No. 33.] Sy ahs SOOT ; 
of Pieris rape, L. We made thorough experiments with the emul- 
sion of kerosene oil, which we found successful last season, with the 
view of discovering the least amount of vil and soap that would prove 
efficient. We found that one ounce of common, yellow, hard soap, 
one pint of kerosene oil, and one and one-half gallons of water, thor- 
oughly mixed, will destroy all of the worms that are wet with the 
mixture. We applied it with a watering-pot having a fine rose. 
Care must, however, be taken to keep the ingredients thoroughly 
mixed, for if the oil is permitted to rise to the surface so that it all 
passes out upon a few plants, it will prove fatal to the few, while the 
remainder will not receive enough to destroy the worms. The kero- 
sene is the insecticide, the object of the soap being only to thicken 
the liquid so as to retard in a measure the separation of the oil from 
the water. A larger proportion of soap makes the water so thick that 
it will not flow readily through the openings of the rose. A larger pro- 
portion of oil endangers the plant, while a smaller proportion is ineffi- 
cient against the worms. Having decided upon this formula, which 
cost a multitude of experiments, and not a few cabbages, we proceeded 
to apply it to the plants regularly at intervals of once a week, but it soon 
became evident that only a few varieties were able to endure such fre- 
quent treatment. The leaves of the early varieties shrivelled and 
blighted, and in some cases the plants drooped and died. It wasa 
matter of interest to note what a difference exists in the powers of en- 
_durance of different varieties. Some varieties failed to show the effect 
of five successive applications, while others shrivelled after a second 
application. 
It'is evident from the above statements that our remedy is nota 
satisfactory one. ‘The perfect remedy should not only destroy the 
worms whenever it touches them, but it should not injure the plantin 
the least under any number of applications. - We hope next season to 
repeat our experiments, using an atomizer in place of a watering-pot. 
We made many experiments with other applications, but none 
offered so much promise of success as the formula named. 
Bi-sulphide of carbon has frequently been recommended for pre- 
venting the attacks of the squash-vine borer, Melittia cucurbitae. We 
filled small bottles with cotton, saturated the latter with this liquid, 
and placed these in the soil about squash vines early in July. <A pin 
inserted at the side of the cork permitted a constant but very gradual 
exit of the fumes of the liquid which were temporarily absorbed by 
the soil. The cotton in the bottles was repeatedly saturated with the 
liquid as it became dry. The plants soon withered under the influence 
of the noxious fumes, though the bottles were often placed a foot from 
the stems; but we noticed no diminution of the borers. Indeed, we 
often found them in close proximity to the offensive bottles. It be- ~ 
came evident that we must battle with our enemy above ground if our 
efforts were to avail anything. 
Accordingly, we very carefully. removed the borers from a few vines 
and applied a mixture of Paris green and water to the stems, using 
enough of the poison to faintly color the liquid. This proved un- 
questionably beneficial. We commenced its application about August 
20th, and afterwards found very few borers in the plants treated with 
| it, though they were of varieties very subject to their attacks, A care- 
