SECOND UEPOHT ON VA.BIOTJS MANURES AT OHISWICK. 135 
As contrasted with the general results observed in the preceding 
season, the plants in boxes 1, 2, and 3 were about the same ; those 
in 4 (nitrate of soda) were throughout more vigorous than before ; 
those in 5 and 6 about the same, save in the extraordinary 
decline in vigour manifested by the plants in box 6 after the cutting 
in 1870. 
The root-development also presents some differences as com- 
pared with the former season's growth. In box 1 the growth 
was about the same. In box 2, on the other hand, root-develop- 
ment in 1871 was at a maximum, while in the preceding year it 
was very low. 
In the ammonia, box 3, root- development was high in both 
years. In the nitrate box the roots attained the same degree of 
development in both years. 
In the case of the mineral and ammonia (5) the roots showed 
a higher development than in the preceding season. 
Lastly, in box 6, while in 1870 the roots were high, in 1871 
they were low, the plants never having recovered the check 
consequent on the cutting. 
Foa annua. 
Boxes 
1. 
2. 
3. 
1870. 
April 25 
a 
c 
d 
May 2 
a 
I 
d 
» 9 
a 
h 
c 
„ 16 
a 
b 
e 
„ 23 
a 
b 
c 
„ 30 
a 
b 
c 
a 
b 
c 
20 
a 
b 
c 
„ 27 
b 
a 
c 
Cut on June 27. 
August 22 
/ 
/ 
/ 
/ 
/ 
"d 
d 
e 
e 
e 
e 
e 
d 
f 
f 
All dead from drought except in 2, in which 
box they are sickly. 
In the unmanured box growth was uneven and the plant weak. 
q2 
