Experiments at Burcott Lodge Farm, Leighton Buzzard. 105 
no cleaning. There had been a good deal of dry weather previous 
to the 2()th of May, when a heavy rain fell which moistened the 
land sufficiently for seeding. On the 27th the ground was 
ridged and the dung applied ; on the 28th all the manures were 
applied, the ground was ridged up and the seed sown. There was 
no very marked difference between any of the artificially manured 
plots previous to singling out, which took place on the 2nd of 
July. There was quite a uniform braird, the ridges were 29 inches 
apart — the plants along the rows were intended to be only a foot 
apart, but on counting several places afterwards the plants were 
at nearly 15 inches intervals on an average. By ordinary obser- 
vation the crop looked very uniform, but by close inspection, 
actual measurement, and counting, there were several small 
blanks here and there which accounted for the number of roots 
beinff much fewer than would have been the case had there been 
exact uniformity in the singling and growth. 
The table of results shows nothing very striking ; at the 
same time, by careful comparison some information may be 
gained, especially for future comparison with similar experiments. 
Plot 6 — 9 tons 4 cwt. — shows an increase of 22 cwt. of swedes 
from 9 cwt. of dry coprolites, compared with Plot 5 without 
any manure. 
Plot 8 shows an increase of only 18 cwt. from 3 cwt. of dry 
coprolites, compared with the unmanured plot. Still there is a 
certain uniformity of results in proportion to the weight of 
coprolites applied. There is also a very close result from 
Plots 5 and 10, neither of which had any manure, so that 
although the increase from dry coprolites would scarcely pay 
for the manure, there 'is an increase of crop. 
To compare Plots 7 and 9, which had dissolved coprolites, 
with the plots which had the undissolved, there is an increase 
of weight in both plots, respectively of 24 cwt. and 21 cwt., 
which is very much a relative increase over the dry coprolites, 
that the dry coprolites had over the plots without any manure. 
To compare Plots 8 and 9, there is an increase of 21 cwt. per 
acre, from an equal weight of dissolved as against dry coprolites, 
although Plot 7, with 6 cwt. of dissolved coprolites per acre, 
against Plot 8, shows but a very small increase in proportion 
to the relative manurings. 
The dung was very poor indeed, little better than rotted straw. 
3 cwt. of dissolved coprolites increased the crop, instead of dung 
alone, by 2 tons 18 cwt. per acre. This may be looked upon 
as a very natural result — that the dung, poor as it was, supplied 
some nitrogen which, as is well known, must either exist in the 
soil by previous manurings or must be applied to any root crop 
if any weight of bulbs is to be looked for. 
