TIIK KFFKCT OK MANURES. ST? 



LoIiHiit pvretniv atitl Arrhrnnflu'rum nvninri'nni wore very iiinclj 

 rcduccil. 



Tt is certiiinly Honu'what discotira^'ing to find tlmt tlu' innnenoe 

 of farinyurd inanuro was not favorable luuU'r all circiunstancfs. 



Xltmte of soda ahnir. — This {jciicrally gave tin incrcascil i)r(t- 

 portion of grassos. a liifc-rijHMiing dark green erop, ratlicr more 

 leafy than stemniy. 



Snperphnsjthdc and animonta. — This ])roduced niiu'li the same 

 effect as the anunoniii added to other < <)nil)ijjations, viz: increas- 

 ing tho grasses and greatly diminishing the leguminous and mis- 

 cellaneous plants. 



Minerals and amnmnia. — Here the yield was large, the grasses 

 much increased, the legumes and weeds not improved. The 

 hirger tho amount of ammonia the more marked were the results. 



All poor grasses, cxcejit Lolnnn, were discouraged by the 

 ammonia. Tho Jianiinnihirfamnd VinhcUifcra', ('(inipositw, Lahi- 

 atiB were nearly expelled or greatly diminished. 



The grasses on tho plats thus treated ran much to leaves. 



Minerals and yitrate. — The proportion of grasses was large, 

 that of legumes snndl, and that of miscellaneous plants much 

 reduced. 



Sulphate of lime, (gypsum) often called "i)laster," sometimes 

 slightly increases the growth of leaves and stems of grasses, but 

 usually exerts a very marked effect to increase the growth of 

 leguminous crops. 



Disuse of manure. — In such cases the plants soon assumed the 

 conditions of those on the unmanured plats. A disuse of potash 

 was followed b}- a decrease in the produce of grasses, a marked 

 decrease of the legumes and an increase of miscellaneous jjlants. 



The practical conclusions may be very shortly stated. Drain- 

 age, marling, liming, must not be neglected. The application 

 of bones is not recommended for general adoption. They ap- 

 pear to be chiefly adapted to tho exhausted pastures of certain 



