SECOND BEPOET ON VABIOUS MANUEES AT CHISWICK. 133 
The plants treated with mineral salts and ammonia salts com- 
bined showed the highest growth ; and not only this, but they were 
also the most floriferous. 
The mixture of mineral manure and nitrate of soda in box 6 
also produced a high degree of vigour and abundant bloom. 
The singular check experienced after the cutting has already 
been commented on. 
As the plants did not survive the winter, no observations were 
made on the roots. 
"When the growth in the six boxes is compared with that of 
the preceding year, it will be seen that the same low relative 
growth occurred in boxes 1 and 2 as before, though this year 
the advantage was with the mineral manure. 
The ammonia salts, which last season produced so much fluc- 
tuation in growth, were much more uniform in their effect than 
before ; and the same may be said of the nitrate of soda. 
A slight difference is observable between boxes 5 and 6. Last 
year it was the mineral and nitrate which produced the greatest 
vigour of growth, while this year it was the mineral and ammonia 
which induced the greatest development. Moreover it is worthy 
of remark that a similar decline in vigour after cutting occurred in 
box 6 last season as in this. 
Lolium. 
As shown in the Table on the following page, the lowest develop- 
ment occurred in the unmanured boxes up to the time of cutting, 
after which, as in the case of the Anthoxanthum, the plants in box 
6 were lowest in point of vigour and remained so. 
The plants grown with mineral manure were also of a low 
degree of vigour, but increased after cutting, and remained high 
till the end of April 1871. 
In the case of the ammonia salts a low and tolerably uniform 
growth occurred throughout. 
Nitrate of soda produced a very high degree of vigour up to the 
time of cutting, after which a slight decline was manifest. 
The mixture of ammonia and mineral salts also produced a high 
degree of vigour, which persisted throughout. 
Mineral salts and nitrate induced a high average growth, which 
declined very much after the cutting, as already alluded to. 
VOL. III. Q 
