SECOND EEPORT ON VARIOUS MANURES AT CHISWICK. 125 
Box 2 (mineral manure). Surface covered with healthy plant 
rather more vigorous than in No. 1. 
Box 3 (ammonia salts). Surface covered with healthy plant more 
vigorous than in 2. 
Box 4 (nitrate of soda). Similar to 3, but with broader leaves. 
Box 5 (mineral and nitrate), and 6 (mineral and ammonia). 
Plant healthy, about as in 2. 
ii. AnthoxantJium odoratum. 
In all six boxes fully one half the plants were dead ; boxes 5 
and 6 had slightly the advantage in regard to the number of living 
plants. No satisfactory comparison can be instituted between the 
plants. 
iii. Lolium perenne. 
All the boxes covered with healthy vigorous plants. 
Boxes 1, 2. Leaves about 2 inches long. 
Box 3. Leaves about 2| in. long. 
Boxes, 4, 5, 6. Leaves 3 in. long. 
The leaves in boxes 3 and 4 were rather darker and broader 
than in 1 and 2 ; and those in 5 and 6 exceeded those in 3 and 4 in 
these particulars. 
iv. JPoa annua. 
All the boxes thickly covered with rather stunted plants, 
having leaves about ^ in. long. 
In box 1 half the plants were dead ; in box 6 about one fourth. 
The plants in box 3 were much the healthiest and most vigorous 
of the whole. 
V. Poa trivialis. 
All the boxes fairly covered with plant, but not so thickly as 
in the case of P. annua. 
The plants in boxes 2 and 4 appeared dead at first sight, but 
on closer inspection were seen to be pushing out new shoots. 
The plants in box 3 were the most healthy, having leaves 
about 1 in. long. This relative superiority of plant in box 3 
(ammonia), was also noted in the preceding October in the case 
of the two Poas. 
