136 Chemical Report. 
I'lut. 
6. Common salt 5C lbs'. 
7. Peruvian guano , .. .. 5G lbs. 
8. Crude potash salts 56 lbs. 
g (Mineral superphosphate 5G lbs. 
■| Peruvian guano 50 lbs. 
10. No manure. 
The effect of tlie manures should be observed for at least four 
successive seasons. The experimental acre should be hurdled 
off from the rest of the pasture-field, and the whole produce 
be carried off and weighed every year, and not be fed off by 
stock. 
The long-continued drought in the past season, I regret to say, 
spoiled almost completely all the experiments on root-crops, 
carried out with considerable expense and much painstaking 
labour. Favourable reports, however, have been received of 
experiments on potatoes, artificial grasses, and permanent pas- 
ture. The experiments on permanent pasture were less favour- 
able, and require to be watched and continued for a number of 
succeeding years before any legitimate conclusions can be drawn 
from them. 
The experiments on artificial grasses, on the whole, are con- 
firmatory of similar ones made in previous years ; they bring out 
strongly the beneficial effects which a mixture of salts of potash 
and superphosphate produces on seeds grown on poor light sandy 
soils, and show the inefhcacy of potash for seeds, and, I may 
add, for nearly all crops on land in a high state of cultivation, 
and on soils containing a fair proportion of clay. 
The accumulated results obtained in different counties of 
England are sufficiently numerous to warrant the publication 
of a paper, which I hope to prepare for the next volume of the 
Journal. 
Analyses made for the Mewlers of the Royal Agricultural 
Society, December, 1867, to December, 1868. — Guano (natural), 
33 ; artificial guano and similar compounds, 32 : superphos- 
phates, 91 ; bone-dust, IS ; refuse manures, 22 ; nitrate of soda 
and sulphate of ammonia, 17 ; marls, limestones, and other 
minerals, 22 ; soils, 18 ; oil-cakes, 102 ; feeding meals, grains, 
and other vegetable productions, 32 ; water, 36 ; milk, 5 ; ex- 
aminations for poisons, 4. Total, 432. 
Augustus E. Voelckee. 
Laboratory, 11, Salisbury-square, 
Fleet-street, E.C., Dec, 1868. 
