[ 93 ] 



IV. The result of some Experiments in the Garden of the Society 

 on the action of Fertilizing Agents upon the Lawn. 



(Communicated by the Garden Committee.) 



Like all places, which have been long cultivated, the Garden 

 of the Horticultural Society is by no means well suited to experi- 

 ments with manures. Nevertheless it has appeared desirable to 

 employ it for such ends, quantum valet, and accordingly, among 

 other things, attempts have been made to ascertain the effects of 

 various manuring agents upon the grass of lawns. The results of 

 these experiments are now detailed. 



The lawn in the Society's Garden was the scene of operations, 

 and the experiments were necessarily brought to a close in the 

 beginning of May, before the grass could run up into hay ; so that 

 the results about to be mentioned do not express the quantity of 

 produce per acre with reference to a hay crop, but merely the 

 relative productiveness of the ground under equal circumstances. 



The notes upon them were made at four different times during 

 the season, first in November, shortly after the application of the 

 manures ; secondly, in the beginning of February ; thirdly, in the 

 beginning of April, and fourthly, on the day when the grass was 

 cut and weighed. The printed remarks are the substance of all 

 such notes, but more particularly of those made at the time when 

 it was cut. 



Each experiment occupied one rod of ground, and great care 

 was taken that the soil and lawn should be as nearly as possible 

 the same in each experiment. A part of the trials was made in 

 the months of October and November 1842, the remainder in 

 March 1843, with a view to a determination of the difference 

 which season makes in the application of such substances. The 

 following table shews with what success. 



