44 
ROYAL nORTICULTUEAL SOCIETY. 
The contrast with the condition in July is very remarkable : 
thus in the unmanurcd box the plants rose from the minimum 
to the maximum degree of vigour ; in box 2 (mineral) a similar 
rise was manifest. In box 3 no change was observable. In 
box 4 a great rise was seen. In box 5 (ammonia and mineral) the 
plants manifested a great decline, as also in box 6 (ammonia and 
nitrate). 
It will be seen that there was no correspondence between the 
condition of the plants in the mixed boxes (5 and 6) and that of 
the plants in boxes 2 and 3 and 2 and 4, as might have been ex- 
pected. 
xii. Carum. 
Plants all healthy, vigorous, with no tendency to flower (bien- 
nial) ; boxes 1 and 2 were the least-developed ; the remainder all 
about alike. As compared with the condition in July, but little 
difference v/as observable, except in the opposite condition of the 
plants in 3 and 4 respectively — a rise in 3, and a corresponding 
decline in 4. Further comments on the state of the plants in 
October will be found in the following section. 
Olservations on the State of the Moots of the several I^lants in 
April 1870. 
The plants were allowed to remain in the several boxes through- 
out the winter, till the 1st of April, 1870, when the boxes were 
emptied of their contents, fresh manure incorporated with the old 
soil, and a definite number of plants replanted in the boxes at re- 
gular distances apart. The removal of the soil from the boxes 
allowed an iuspection of the roots to be made ; and the following 
is a summary of the main appearances then observed. 
i. Dactylis glomerata. 
Box 1 (unmanured). Koots fibrous, fibres descending vertically, 
18 inches long, slender, with numerous evenly distributed fibrillse. 
Box 2 (mineral manure). Pibres 18-20 inches long, more 
densely branched and matted than in any of the others. 
Box 3 (ammonia-salts). Boots 14 inches long; fibres thicker, 
than in 1 ; ultimate fibrils not so numerous as in 2. 
Box 4 (nitrate of soda). Superior in general development to 3, 
inferior to 2 ; fibres 16-18 inches long, not so thick as in 3 : fibrils 
less densely matted. 
Box 5 (mineral and ammonia). Boots 14-15 inches long, more. 
