104 
Artificial Manures for Swedes. 
1 
9 
7 
11 
12 
56 
1 
12 
2 
12 
16 
16 
1 
2 
0 
8 
16 
0 
1 
14 
2 
13 
12 
16 
0 
15 
'2 
G 
0 
16 
1 
5 
0 
10 
0 
0 
1 
9 
0 
11 
12 
0 
0 
13 
0 
5 
4 
0 
1 
3 
0 
9 
4 
0 
1 
5 
1 
10 
0 
8 
The soot on analysis was found to contain 3 • 833 per cent, of 
ammonia : it was procured at tlie rate of Gd. per bushel. 
It havings been found on previous trials that it was quite 
imp()ssil)le to calculate the yield of each plot by weighing only 
a small number of roots, the whole produce of each experimental 
plot was weighed on a weigh-bridge. 
The following table exhibits the yield of each experimental 
plot and the weight of the trimmed roots calculated per acre : — 
Table showing the Produce of trimmed Swedes of Experimental Plots 
of one-cifjhth of an Acre, and Wciglit of Crop per Acre. 
Per i of an Acre. Per Acre, 
tons. cwts. lbs. tons. cwts. lbs. 
Plot I. (Guano) yielded 
II. (G uano and dissolved coprolites) 
yielded 
.III. (Bone-dust) ... 
,, IV. (Bone superphosphate) ,, 
,, V. (Economical manure) ,, 
VI. (Nut-refuse) ... ,, 
., VII. (Dissolved coprolites) ,, 
„ VIII. (Nothing) ... 
,, IX. (Commercial dried night-soil) 
,, X. (Mixture of soot, guano, dis- 
solved coprolites, and bone- 
superphosphate) . ,, 
The results obtained in these experimental trials are both 
interesting in a practical and scientific point of view, and I may 
therefore be allowed to offer a few remarks which are suggested 
by them. Before doing this, however, a point of some moment 
demands special notice. It will be observed that the unmanured 
portion of the experimental field only gave a produce of 5 tons 
4 cwts. per acre. The natural inference which may perhaps be 
drawn from so small a crop is, tiiat the land was not in a proper 
state of preparation for the turnip-crop, and that, consequently, 
all the experiments are not to be depended upon ; I have shown, 
however, by the mechanical analysis of the soil on which the 
experiments were tried, that it was well pulverized, and have 
been assured moreover by our farm-manager, that the experi- 
mental field was in a fit state of preparation for the swedes. 
The soil, it is true, was naturally poor, shallow, and rested on 
lime-stone rock, from which it was separated by a clayey subsoil 
of inconsiderable depth. But far from considering this circum- 
stance as being calculated to vitiate tlie results of the trials, there 
is much reason to believe that a soil of such a description is 
peculiarly well adapted for the making of experiments from 
which legitimate and trustworthy inferences may be derived. 
A poor soil, it strikes me, is much better adapted to bring out 
the full manurial effect of different fertilizers than land in the 
