228 SA | ASSEMBLY 
topped at the same atage of growth and upon the same day. In our 
experiments the past season we have observed these rules with care. 
The soil on which our tobacco was grown is a heavy clay. It was 
liberally fertilized in the spring of 1882 with well rotted horse-manure 
mixed with scarpings from the hen yard. Of its previous treatment 
we know nothing, though at this time it appeared to bein a high state 
of cultivation. No fertilizer was applied in the spring of 1883, ex- 
cept those which contributed to our experiments. 
The variety of tobacco grown was that known in southern New 
York as the *‘ Brand,” being a very vigorous strain of the Connecticut 
Seedleaf. The plants were started in the cold frame and transplanted 
June 8th, in rows sixty feet long and three and one-half feet apart, 
the plants being set two feet apart in the row. 
July 16th we apphed fertilizers as named below, distributing the 
substances as evenly as possible over the surface of’ the soil for three 
and a half feet on either side of the rows mentioned. As appears, 
two rows were passed over between each two fertilizers. 
Row No. 1, one pound muriate of potash applied in solution. 
Row No. 4, one pound nitrate of potash (saltpeter) applied in solu- 
tion. 
Row No. 7, one pound sulphate of iron (copperas) applied in solu- 
tion. 
Row No. 10, two pounds sulphate of potash applied dry. 
Row No. 13, one pound sulphate of potash applied in solution, and 
two pounds National Superphosphate applied dry. 
Row No. 16, five pounds sulphate of lime (land plaster) applied dry. 
Row No. 19, five pounds slacked lime applied dry. 
The plants were topped very soon after the embryo flower was visi- 
ble, and were cut and hung August 26th. The plants from the fertil- 
ized rows were hung in the center of a block, where they were sur- 
rounded on all sides by other plants, to guard against inequality in. 
curing. ‘They were taken down November 22, and the leaves stripped 
off and weighed November 24. 
In the table below the weights given in pounds and decimals of a 
pound are of ten plants that were topper on August 11, from each of 
the fertilized rows. 
Ten ats weighed Ten plants yielded Per cent by 
green, 
of cured leaf, weight of 
lbs. cured leaf. 
Row 1. Muriate of potash... 29-042 3-187 10-974 
Row 4. Nitrate of potash... 28-576 2-422 8-486 
Row 7%. Sulphate of iron.... | 31-599 3-269 — 10-345 
Row 10. Sulphate of potash... 29-983 2-969 OS Ue 
Row 13. Sulphate of potash 
with superphospate 38-702 3-894 10-062 
Row 16. Sulphate of lime.... 27-648 2-695 9-026 
Row 19. Slacked lime....... 34-453 2-945 8-548 
During growth no difference was noticed in the various rows, but, 
as the figures indicate, a difference really existed. The fertilizers seem 
to have had an influence not only upon the weight of the green plants, 
but also upon the percentage of cured leaf. ‘his is a reminder that 
