SECOND REPOBT ON VABTOUS MANURES AT CHTSWICK. 129 
Poa trivialis, replanted April 5 ; 16 small bunches for each box 
taken from a heap of soil in the garden, as that growing in the 
boxes was a mixture of P. trivialis and P. annua. 
JBromus, replanted April 4 ; 9 bunches as nearly single plants 
as possible. 
Trifolium pratense^ replanted April 2 ; 9 average plants in each 
box. 
Lotus, replanted April 4 ; 9 average plants. 
Trifolium repens, replanted April 4 ; 9 average plants. 
Flantago, replanted April 4 ; 9 average plants (not seedlings). 
Achillea, replanted April 5 ; 9 pieces without runners, the 
plants being so matted that it was not possible to separate indivi- 
dual plants entire ; and if possible, they would have been too 
large. 
Carum, replanted April 5 ; 9 of the smaller plants in each box. 
Each box was replanted with its own plants, with the exception 
of Poa trivialis. 
Summary of Observations on the Progress of the Plants during 
the Season of 1870. 
The following Tables show the relative state of development 
of each of the twelve plants in the six boxes repectively, as ob- 
served on the dates mentioned. The degrees of vigour are 
indicated by letters, a signifying the least,/ the greatest degree 
of general vigour and health. The estimates were arrived at by 
careful inspection and measurements of the plants in each box, 
care being taken to get as fair a general average as possible of 
the state of the plants. 
To each Table are subjoined explanatory notes, a comparison 
with the results of the former season's experiments, remarks on 
the root-development, &c. The notes on development were chiefly 
taken by Mr. Burley, an assistant in the Grarden at Chiswick, 
under the superintendence of the writer, whose own personal 
observations though not so frequent or regular, yet served to 
control those of Mr. Burley. 
