Growth of Turnips at Rusper, Horsham. 
125 
It will be noticed that dung alone appears to have given a 
better yield than dung and artificials. But it may also be 
noticed that the two plots from which the mean yield of dung 
alone is calculated, differ very widely between themselves ; for 
while one gave 9 tons 12 cwts. 3 qrs. of roots per acre, the 
other only gave 6 tons 6 cwts. 3 qrs., from which it is evident 
that Plot No. 7 — on the south-east side — must have been in 
better agricultural condition than the rest of the experimental 
field. The superiority of the crop on this plot was apparent 
throughout the growth. If the smaller of the " dung-only " 
plots be taken as a basis, the increase due to 10 tons of dung 
would work out at 4 tons 18 cwts. 0 qrs. 4 lbs. per acre. 
It will be noticed that the results of the previous year, on the 
soil poor in lime, were reversed, inasmuch as the superphosphate 
in the limed soil gave better results than the ground-coprolites ; 
but the difference in favour of the superphosphate was only 
slight. However, as will have been seen, the crop was a 
wretchedly poor one — in all practical senses a failure — mainly, 
no doubt, owing to the very dry weather in August, 
The rainfall registered on the farm was as follows : — 
Inches. 
June 16th to 30tli 1-85 
July 2-33 
August '67 
September 4*-±l 
October 2-71 
11-97 
During August the dryness of the weather — the danger of 
which chiefly militates against the successful growth of turnips 
on stiff-clay land — punished the crop so severely that it never 
regained vigour ; and so the experiment can hardly be regarded 
as a fair or satisfactory one. 
The results of the 1882 experiments were indisputably such 
as to show that under some conditions on stiff-clay soil, poor in 
lime, finely-ground Cambridge coprolites are capable of in- 
creasing the turnip-crop by nearly 10 tons an acre, under 
circumstances in which an equivalent value of superphosphate 
(dissolved coprolites) only gave an increase of about 8| tons ; 
and it would furthermore appear that the ground coprolites 
produced a more favourable effect on the subsequent crops than 
did the superphosphate, though the discrepancies in the oat 
plots, and the general unevenness of this crop as seen in the 
field, prevent any decided conclusions being drawn with regard 
to this point. 
The turnip-experiments of 1883, which consisted in a repe- 
