400 On the Continuous Growth of Wheat on the 
the latter predominating — accompanied by much rain, are not 
favourable to growth. 
Table IV. — Summary of the Eesults of the Twenty-fourth Season, 
1866-67. 
Plots. 
Manures. 
(Quantities per Acr;-.) 
Produce per Acre, &c. 
Dressed Corn. 
Total 
Corn. 
Straw 
and 
Chaff. 
Quantity. 
Weight 
per 
Bushel. 
3 
2 
10a 
9b 
5a & B 
6a &3| 
7a & b| 
9a I 
8a & ij| 
400 lbs. ammonium-salts alone = 86 lbs. N. 
550 lbs. nitrate of" soda alone = 86 lbs. N. 
200 lbs. ammonium-salts = 43 lbs. N. .. j 
Mixed mineral manure, and 1 
400 lbs. ammonium-salts = 86 lbs. N. . . / 
550 lbs. nitrate of soda = 80 lbs. N. . . j 
600 lbs. ammonium- salts = 129 lbs. N. .. / 
busli. pks. 
8 3i 
27 2i 
18 0^ 
22 OJ 
9 1 
15 3 
22 Of 
29 01 
30 If 
lbs. 
56- 1 
61-4 
57- 9 
57-4 
59- 4 
60- 5 
61- 0 
59- 9 
60- 7 
lbs. 
532 
1755 
1123 
1392 
580 
1003 
1417 
1855 
1952 
lbs. 
973 
3136 
2023 
3246 
1033 
1723 
2762 
4918 
4196 
Estimated average for the United Kingdom"! 
21 0 
01-0 
We had both on the unmanured plot — as also on all the other 
plots, no matter what description of manure had been applied — 
a low yield. The unmanured produce was less than 9 bushels 
per acre, and, except in the spring sown crop of 1853, no such 
low produce has been obtained. The highest produce in the 
field was below 31 bushels, and the average yield of the crop 
of the country was estimated at 21 bushels, of the calculated 
weight of 61 lbs. 
Twenty-fifth Season, 1867-68. 
October, 1867, was very variable as to temperature, upon 
the whole colder than usual, with comparatively little rain, but 
occasional high winds. There was unusually little rain in 
November, and the weather was for the most part clear but cold, 
and very favourable for working the land and sowing. December 
was characterised by great and rapid variations of temperature 
and barometric pressure, with some extremely heavy gales ; 
occasionally frost, snow, and sleet, at other times very warm 
weather; in the aggregate there was a full amount of rain, and 
throughout the month agricultural operations were much iin- 
