rvEPORT ON VARTOFS MANURES AT CHTSWICK. 
71 
grasses, — and, in fact, was only exceeded uniformly by the Plan- 
tago lanceolata, and in two cases by the Achillea Millefolium. 
The very high amount of produce without any manure at all, 
corresponding to about 6| tons of dry substance per acre, clearly 
indicates tlie richness of the soil ; and owing to this fact, and to 
the doubtless unequal stage of growth of the plants under the 
different conditions at the time of cutting, abnormal results as 
to the final amount of total produce are only what might have 
been expected. We have, at the time of cutting, even a less 
amount of total produce by mineral manures than without any 
manure ; but at the same time a proportionally high percentage 
of mineral matter, indicating less maturity. With each of the 
nitrogenous manures, on the other hand, there is increase, but, 
contrary to common experience with plants of this family, more 
in both cases in which ammonia-salts were employed than in 
either where the nitrate was used. There was, throughout, a low 
percentage of mineral matter in the dry substance ; and although 
strict comparison on the point cannot be made between plants 
of different species, it may be mentioned that it was not only 
lower than in the case of either of the other Leguminosae, but 
under each of the six conditions lower than in the case of any other 
species of the twelve. Consistently with this, the Lotus (being 
well podded and seeded) was more matured than any other de- 
scription of plant. 
Diagram 15. Trifolium repens. — This plant did not, under 
any condition, yield as much produce as the Trifolium pratense ; 
and only in one instance did it give half as much as the Lotus. 
Each of the manures gave some iucrease ; the purely mineral ma- 
nures nearly as much, however, as either of the nitrogenous ones. 
The percentage of mineral matter in the dry substance was 
throughout rather high, indicating relatively immature condi- 
tions ; and it was the more so under the manured than under 
the unmanured conditions. 
It will be observed that the above results with Leguminosse 
are, in some respects, not consistent with what might have been 
expected from the remarks made in introducing the considera- 
tion of them. It is true that, in two out of the three cases, 
the mineral manures did give notable increase. The nitro- 
genous manures, on the other hand, though they did not give 
very great increase, might, so far as these results are concerned, 
be judged to be nearly as appropriate for these plants as for the 
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