30 
60 plants to each row. I poured on the stems and lower ends of the 
leaves of 
Row No. 1: Mandrake infusion ; 
Row No. 2: Elder infusion; 
Row No. 3: Stramonium infusion; 
Row No. 4: Ailanthus infusion; 
and, Tansy being plentiful on the place, I made a strong infusion of it, 
and wetted over 1,000 plants which were to be planted on another part 
of the lot. I also made a solution of 
Alum, 2 ounces to 1 pint of water; 
Niter, 2 ounces to 1 pint of water; 
Saleratus, 4 ounces to 1 pint of water; 
Lime water, 4 ounces to one quart of water; 
and applied these strong liquids to rows 5, 6, 7, and 8, which together 
made 9 tests or experiments. 
I did not examine these for results till June 29. The Tansy seemed 
to show the best results, and I could only find 4 plants eaten off by cut- 
worms. 
The saleratus had been strong, and killed several plants, and I could 
not pronounce any of the other experiments entirely successful. 
Mr. McGrath had lost many plants in this lot of about four acres by 
cut-worms during the last two weeks. 
June 17 : tried the effect of infusion of Ailanthus, Tansy, Elder, and 
mandrake, sprayed on with a brush by drawing the hand lightly over 
the brush till all the leaves were wetted. These did not give very sat- 
isfactory results, though partially effective. Next day, I thought I would 
assist them with some cheap powders. I procured some gas lime, and 
sifted it; and also made a powder of gas tar and lime, then sifted. This 
last was composed of J ounce of tar to 1 pound of lime. I also made a 
preparation of quicklime, well sifted. After spraying the vines, and 
making a number for each experiment, I proceeded thus — 
No. 1. Elder leaves, followed by a dusting of gas-house lime. 
No. 2. Stramonium, followed by a dusting of tar lime. 
No. 3. Mandrake, followed by a pure lime dust. 
No. 4. Tansy water, followed by pure lime dust. 
No. 5. Ailanthus leaves tea, followed by gas-liouse lime. 
No. 6. Ailanthus leaves tea, followed by tar lime. 
No. 7. Ailanthus, followed by pure lime. 
No. 8. Lime water alone, as a thin whitewash. 
No. 9. Niter water alone, 2 ounces to 1 pint of water. 
No. 10. Alum water alone, 2 ounces to 1 pint of water. 
No. 11. Saleratus, 4 ounces to 1 pint of water. 
No. 12. Gas lime and pure lime, mixed in equal quantities. 
No. 13. Tar lime alone. 
No. 14. Pure lime alone. 
I had never seen potato vines more thickly covered with bugs than 
these were when I commenced with them, owing to the fact of the 
