Report of Experiments on the Growth of Wheat. 1 09 
average. July was, upon the whole, fine, sometimes excessively 
hot, with little distributed rain, but a good deal in a heavy 
thunderstorm towards the end of the month. In August, again, 
not much rain fell, but it was distributed over the whole month. 
September was showery, windy, and generally of rather low tem- 
perature, but still, upon the whole, favourable. In June, both 
dew-point and degree of humidity of the air were rather below 
the average ; in July the dew-point was above, but the degree of 
humidity below the average ; in August, both dew-point and 
degree of humidity were considerably above the average ; and in 
September the dew-point was low, but with the prevailing low 
temperatures the degree of humidity was rather high. 
Both the yield per acre, and the quality of the grain, of the 
harvest of 1847, were reported to be generally above the 
average. 
In the experimental field mineral manures were in no case 
employed alone in this season ; neither potass, soda, nor magnesia 
was used. Superphosphate of lime was applied in smaller 
quantity than in the preceding year, but on nearly the same 
plots ; ammonia-salts in rather larger quantity ; and rape-cake 
not at all ; but rice, as a means of supplying decomposing organic 
matter containing much less nitrogen than rape-cake, was applied 
in a few instances in large quantity per acre. The following 
is a summary of the most characteristic results : — 
Table IV.— Summary of the Results of tlie Fourth Season, 184G-7. 
Produce peu Acre, &c. 
Maxlt.es. 
(Quantities per Acre.) 
300 lbs. Ammonia-salts (equal parts Sulphate! 
and Muriate) ; mean of 8 experiments (Plots> 
6a, 66, 7a, 76, 9a», 96, 10a, and 106) .. ..| 
300 lbs. Ammonia-salts (equal parts Sulphate < 
and Muriate), and Superphosphate of Lime ; 
mean of 14 experiments (Plots 5a, lla, 116,1 
12a, 126, 13a, 136, 14a, 146, 16a, 166, 17a, 18a, 
and 186 J 
400 lbs. Ammonia-salts (equal parts Sulphate) 
and Muriate), and Superphosphate of Lime;> 
mean of 2 experiments ("Plots 86 and 176) .. ) 
300 lbs. Ammonia-salts (equal parts Sulphate] 
and Muriate), Superphosphate of Lime, audi 
500 lbs. Rice ; mean of 2 experiments ( Plots ( 
56 and 8a) 
20 cwts. of Rice alone (Plot 9a 'j 
Dressed Corn. 
Total 
Corn. 
Straw 
and 
Chaff. 
1 Quantity. 
Weight 
per 
Bushel. 
Bush. Pks. 
lbs. 
lbs. 
lbs. 
3i 
61- 
0 
1123 
1902 
29 
3f 
62- 
3 
1981 
3G28 
25 
31 
61- 
6 
1711 
2921 
SJ 
62 
3 
1991 
3502 
1 33 
61 
9 
2167 
3991 
32 
o 
ei 
7 
2124 
3702 
22 
3 
1351 
2506 
