on Permanent Meadow Land. 
Under these circumstances, the percentage of the deficiently- 
provided Mineral constituents was comparatively low, whilst that 
of the relatively excessively supplied Nitrogen was considerably 
increased. The percentage of Nitrogen was thus increased, not- 
withstanding that the produce was almost entirely Graminaceous 
where the ammoniacal salts were used ; whilst, Avhere they were 
not employed, it contained a notable proportion of Leguminous 
herbage, the percentage of Nitrogen in which is generally about 
twice as high as in purely Graminaceous produce. The high 
percentage of Nitrogen in the produce grown by ammoniacal 
salts without mineral manure was, therefore, due to an increased 
percentage of it in the Graminaceous herbage. This highly 
nitrogenised Graminaceous produce consisted, it will be remem- 
bered, in very large proportion of leaf; it was stunted in growth ; 
and was of a very dark green colour compared with the pioduce 
where there were larger crops. 
The mixed mineral manure used alone, or in conjunction only 
with sawdust, gave a produce which contained a higher per- 
centage of Nitrogen than either that gi'own without manure or 
with sawdust alone. The percentage of Nitrogen under these 
conditions was nearly as high as where the ammoniacal salts, or 
the ammoniacal salts and sawdust (without mineral manure), 
were used, which gave the stunted, dark green produce, above 
referred to. But the high percentage of Nitrogen in the produce 
now under consideration, namely, that grown by mineral without 
nitrogenous manure, was not due to a high percentage in the 
Graminaceous part of it. It was due to the fact, that the produce 
grown under these conditions contained a large proportion of 
Leguminous herbage, the percentage of Nitrogen in which is, as 
above stated, generally about twice as high as that in purely 
Graminaceous hay. 
It has been seen, then, that the mineral manure alone gave a 
produce containing a high percentage of Nitrogen by increasing 
the proportion in it of the highly nitrogenous Leguminous 
herbage. It has also been seen, that the use of ammoniacal salts 
alone, mineral constituents being in defect, gave a stunted Grami- 
naceous produce, also with a considerably increased percentage 
of Nitrogen. The addition of ammoniacal salts, when there was 
at the same time a liberal provision of mineral constituents, gave 
a very different result both as to the character and amount of the 
crop, and as to the percentage of its Nitrogen. 
If we compare the composition of the produce manured with 
both ammoniacal salts and the mineral manure, with that grown by 
the mineral manure alone, or again, if we compare the produce 
by ammoniacal salts, sawdust, and mineral manure, with that 
by the sawdust and mineral manure without the ammoniacal 
VOL. XX. 2 V. 
