IIEPOET ON VARIOUS MANUEES AT CHISWIOK. 
21 
of true grasses and raising tlie weight of graminaceous produce, 
and the corresponding diminution of the weight of the legumi- 
nous and miscellaneous plants in the produce, were strikingly ex- 
emplified in these experiments. 
" On the other hand, it was found that purely mineral manures, 
such as salts of potash and phosphate of lime, favoured materially 
the growth of the clover tribes, and greatly increased the per- 
centage by weight of the leguminous plants in the whole produce 
of the permanent pasture. 
"At a subsequent Committee-meeting it was agreed to call to-, 
gether the Chemical Subcommittee, who, regarding the coopera- 
tion of botanists and others interested in vegetable physiology 
as desirable, were accordingly joined by Dr. Masters, Dr. Hogg, 
Mr. Murray, Major Trevor Clarke, and Mr. Miers, Dr. Hooker 
and Mr. Bentham expressing regret at being unable to attend the 
Meetings of the Subcommittee. 
Accordingly the Subcommittee met on Thursday, June 18th, 
the following members being present ; — 
Prof. Abel, Dr. Gilbert, 
Mr. Gt. P. Wilson, A. Murray, 
Dr. Masters, Dr. Voelcker. 
" The Subcommittee discussed the manner in which manuring 
experiments on graminaceous and other plants occurring in pas- 
tures might with advantage be instituted, and considered it advi- 
sable to investigate rather the more strictly scientific physiological 
questions which were likely to suggest themselves in the course 
of the experiments than to bear in mind the purely agricultural 
and economic points of interest which they may present. 
" Instead of growing together a number of plants such as are 
common in pastures, it was deemed desirable to study the influ- 
ence of various manures on particular species grown separately, in 
wooden boxes, 2 feet square and 18 inches deep, filled with poor 
soil, such as is found in unmanured and rather exhausted soils of 
our fields, and not with good garden-mould. 
" After due deliberation the Subcommittee selected the follow- 
ing plants for experiments :— - 
i. Dactylis glomerata. 
ii. Anthoxanthum odoratum. 
iii. LoUum perenne. 
iv. Poa pratensis. 
