332 Experiments in Warren Field, Crawley-Mill Farm, Wohum. 
The plots No. 1 in Section A, and No. 7 in Section B, are at 
the end of the field, where the soil, from some cause or other, 
is clearly less productive than the remainder of the field. 
In Section A, on plot 1 (previous swede crop, manured with 
raw coprolites) the yield of barley amounted only to 31 bushels, 
whilst the duplicate experiments in Section B produced 37 
bushels. 
It would evidently not be fair to compare the produce of 
plot 1 (ground coprolites) with that of the adjoining plot 2 
(dissolved coprolites), which gave 37 bushels ; nor would it be 
proper to compare the produce of plot 1 in Section B (ground 
coprolites) with that of plot 2 in Section B (dissolved coprolites), 
for on the latter, for some reason or other, less barley was 
reaped than on the unmanured plot. 
On Section B, plot 7 (bone-meal), it will be seen, produced 
only 32J bushels of barley, or only bushels more than was 
obtained on the opposite plot 1 (ground coprolites), which clearly 
shows that the land at the end of the field where these two 
quarter-acres are situated is not so good as in other places, for 
in the duplicate plot 7 in Section A (bone-meal plot) 45 bushels 
were grown. 
In future experiments the plots 1a and 7b will, I fear, 
have to be thrown out altogether. 
That the land on this part of the experimental six acres is 
really poorer than the rest of the field is also proved by the 
results of the previous swede crop. 
In Section A, plot 1 (manured with ground coprolites) pro- 
duced 19 tons 3 cwts. 1 qr. 8 lbs. of clean swedes per acre (topped 
and tailed), whereas. 
In Section B, the ground coprolites produced 23 tons 1 cwt. 
3 qrs. of topped and tailed clean swedes. 
Again, on the opposite plot 7 in Section B, manured with 
bone-meal, only 18 tons 1 cwt. 2 qrs. 20 lbs. of topped and tailed 
roots were grown; and on the duplicate plot. Section A, 20 tons 
2 cwts. 2 qrs. 16 lbs. 
Eliminating the produce on plot 1, Section A, and of plot 7, 
Section B, and also of plot 2, Section B, from the remainder of 
the experiments, the results of the barley trials in 1881 show, — 
1. That the plot upon which the preceding swede crop was 
manured with ground coprolites yielded at the rate of 37 bushels 
of barley per acre, weighing 50f lbs. per bushel. 
2. That on the plot manured in the preceding year with 
dissolved coprolites 43f^ bushels of barley per acre were grown, 
weighing 51f lbs. per bushel, that is to s.ay a better sample, 
weighing 1 lb. more per bushel than on the land previously 
manured with ground coprolites. Thus Gj bushels more barley 
