272 Report of Experiments with different Manures, S^c. 
And we trust, that others will be found to lend their aid, in 
extending information in this important and hitherto untrodden 
field of inquiry. 
From a review of the Avhole of the facts adduced in this Third 
Part of our Report, it would appear: — 
1. That, whether the produce of hay be considerably increased 
by means of farm-yard manure alone, farm-yard manure and am- 
moniacal salts, or artificial mixtures of suitable mineral manure 
and ammoniacal salts, the proportion of the whole which will 
be Graminaceous, will be very much increased. 
2. That the produce will be by far the most Graminaceous when 
the " artificial mixtures " are employed. In fact, when the in- 
crease of hay is obtained by artificial manures containing both 
the necessary mineral constituents ayid ammoniacal salts — and it is 
then greater than under any of the other conditions — both the 
Leguminous and the JVeedy herbage are neai'ly excluded, and the 
produce is then, therefore, almost loholhj Graminaceous. 
3. That the Graminaceous produce itself, when grown hy farm- 
yard manure, is less complex in character than that grown without 
manure ; whilst that grown by the most active artificial manures, 
is less complex still. 
4. That, up to an equal period of the season, the Graminaceous 
produce grown by the active artificial manures, will be in larger 
proportion in flowering and seeding stem, than that grown icith- 
out manure ; and that the produce grown by farm-yard manure 
will be in still larger proportion in that condition. 
5. That the description of the produce grown by farm-yard 
manure alone was, upon the whole, superior to that grown with- 
out manure. 
6. That when the crop was further increased, by the addition of 
ammoniacal salts to the farm-yard manure, the character of the 
produce was somewhat deteriorated, both in regard to the de- 
scription of the Kspful plants grown, and on account of the large 
proportion of Miscellaneous or Weedy herbage then developed. 
7. That, wlien in a mixed mineral aud ammoniacal manure the 
ammoniacal salts were not used in excessive amount, the herbage, 
which was then almost exclusively Graminaceous, and comprised 
also but very few .species, nevertheless, included a considerable 
proportion of grasses of recognised good quality. But, when exces- 
sive amounts of ammoniacal salts were employed, the character of 
the produce was deteriorated, both in regard to its condition, and 
to the description of the grasses that were developed. 
[To be continued.] 
