30 
60 plants to each row. I poured on tlie stems and lower ends of tlie 
leaves of 
Eow '^o. 1: Mandrake infusion ; 
Row Xo. 2: Elder infusion; 
Eow Xo. 3: Stramonium infusion; 
Row Xo. 4: Ailauthus infusion; 
and, Tansy beiug plentiful on the place, I made a strong infusion of it, 
and wetted over 1,000 plants wbicli were to be planted on another part 
of the lot. I also made a solution of 
Alum, 2 ounces to 1 pint of water ; 
Xiter, 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 Ailauthus, 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. Xext 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 gastar and lime, then sifted. This 
last was composed of ^ 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 — 
Ino. 1. Elder leaves, followed by a dusting of gas-house lime. 
Ko. 2. Stramonium, followed by a dusting of tar lime. 
'Eo. 3. Mandrake, followed by a i)ure lime dust. 
Xo. 4. Tansy water, followed by pure lime dust. 
!No. 5. Ailauthus leaves tea, followed by gas-house lime. 
]S"o. 6. Ailauthus leaves tea, followed by tar lime. 
Ko. 7. Ailauthus, followed by pure lime. 
!N"o. 8. Lime water alone, as a thin whitewash. 
No. 9. Niter water alone, 2 ounces to L pint of water. 
No. 10. Alum water alone, 2 ounces to 1 plot 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 
