on Permanent Meadow Land. 
431 
contained but. a moderate percentage of Nitrogenous compounds. 
This arose from the fact, that the grasses, which still constituted 
by far the largest proportion of the produce, though meagre and 
stunted in growth, Avere still comparatively forward. ^Vith these 
characters, the percentage of the so-called Woody-fibre is com- 
paratively high, and that of the impure Fatty matter is compa- 
ratively low. 
The produce of the plot manured with the mineral manure and 
the smaller amount of ammoniacal salts was bulky, almost wholly 
Graminaceous, and very stemmy. Consistently, the dry substance 
of this hay contained a very low proportion of Nitrogenous com- 
pounds, the lowest amount of any in the series of the green Fatty 
matter, and a high percentage of the more fixed Woody-fibre. 
The mineral manure, together with the double and excessive 
amount of ammoniacal salts, gave an over-luxuriant, succulent, and 
unevenly ripened, but stemmy and almost exclusively Gramina- 
ceous produce. To the former characters may be attributed a 
very high percentage of the calculated Nitrogenous compounds ; 
and to the latter a somewhat low percentage of the impure Fatty 
matter, and a high one of the Woody-fibre. The percentage of 
the green Fatty matter is, however, as would be expected, higher 
than in the produce grown by the mineral manure and the 
smaller amount of ammoniacal salts. The remainder, desig- 
nated as " other non-nitrogenous matters," is less in this over- 
luxuriant produce than in any of the other cases. 
The produce hy farm-yard manure alone, comprised a moderate 
proportion of Leguminous and other non-Graminaceous herbage ; 
but, on the other hand, its Graminaceous herbage was in very 
large proportion in the condition of flowering and seeding stem. 
Consequently, the Dry substance of the hay contained a low 
percentage of the Nitrogenous compounds, a low percentage of the 
impure Fatty matter, and a high percentage of the Woody-fibre. 
T\\e hay grown by farm-yard manure and ammoniacal salts 
together, com])rised a larger proportion of non-Graminaceous 
herbage, than that grown by farm-yard manure alone ; but, the 
Graminaceous herbage itself was in as great a proportion stemmy. 
The result was a hay containing in its dry substance, a consider- 
ably higher proportion both of the calculated Nitrogenous com- 
pounds and of the impure Fatty matter, and at the same time a 
high percentage of the Woody-fibre. 
The general result, comparing the produce by the different 
manures in one and the same season, seems to be, that the more 
the produce is Graminaceous, the more it goes to flower and seed, 
and the more it is ripened, the higher will be the percentage of 
dry substance in the hay. Under the same circumstances, the 
higher will be the percentage of the comparatively indurated, 
and theretore jjrobably effete, Woody-fbre ; and the lower will be 
