46 
IIOTAL nOETICULTUEAL SOCIETY. 
cases close, and presented little trace of the antagonism so marked 
in the case of Daciylis. The main difference was in the case of 
box 3 (ammonia) which seems to have been more favourable to 
the root than to the plant. 
1 
2 
3 
4 
5 
6 
Eoot (April) . , 
a 
I 
e 
/ 
d 
c 
Plant (Oct.) . . 
a 
I 
c 
/ 
e 
d 
iii. Loliim perenne. 
Box 1. Plant caespitose. Eoot fibrous ; fibres 16-18 in. long, 
much branched and matted ; fibrils densely covered with fine root- 
hairs. 
Box 2. Less vigorous than 1 ; fibres 12 inches long. 
Box 3. Much more vigorous than 1 or 2, 14 inches long and 
upwards, rooting into the drainage, more densely fibrous and 
with more numerous root-hairs. 
Box 4. Less vigorous than in 3, 4, and 5 more than in 1 or 
2 ; the fibres ran down to the drainage, but were less matted than, 
in 3. 
Boxes 5 and 6 about alike ; but in 5 the roots were more mat- 
ted, and held the soil together more firmly than in the rest. 
The abundance of root-hairs was very characteristic in the am- 
monia-box. It is worthy of note that in this box (3) the roots 
were the most highly developed, while the plant in October was 
only moderately developed. In box 4 (nitrate of soda) precisely 
the opposite conditions, were observed ; here the root-develop- 
ment w^as moderate, while the plant was comparatively very luxu- 
riant. In the other boxes the diff'erences between root and top 
were not so observable. 
The condition of the root in April and of the plant in October 
may be thus expressed : 
1 
2 
3 
4 
5 
6 
Eoot 
h 
a 
/ 
c 
d 
e 
Plant 
a 
I 
c 
f 
d 
e 
iv. Poa annua* » 
Box 1. Plant tufted. Eoot-fibres numerous, slender, 10-12 
* The obseryations on this plant are aot fully to be relied on. 
