, 134
" " Acts Quicker than Ammonia, 313
" " as a Top-dressing for Wheat, 270
" " Composition of, 312
" " for Apple Trees, 314
" " for Barley, 243
" " for Oats, 252
" " for Onions, 294
" " for Sugar-Beets, 289
" " for Wheat, 159
" " How to Apply, 312
Nitric Acid, 341
Nitrogen, Amount per Acre in the Soil, 28-162
" as Manure, 28
" in Soils, 106-226-336-341
" Makes Poor Manure Rich, 246
Nurserymen, Manure for, 297

Oats, Experiments on in Virginia, 253
" Experiments on at Moreton Farm, 254
" Lawes' and Gilbert's Experiments on, 252
" Manures for, 252
Oil-cake for Sheep, 76
Onions, Manure for, 294

Peas for Pigs, 17
Pea-straw for Manure, 48
Peat, Composition of, 31
Phosphates, 27
" Exhaustion of on Dairy Farms, 101
" Soluble in Barn-yard Manure, 72
Phosphoric Acid in Soils, 106-226
" " per Acre in Soils, 162
" " Retained by the Soil, 219
" " Removed from the Farm by Hay,
and by Milch Cows, 316
Pig Manure, 43-86
" " Composition of, 306
" " for Cabbage, 302
Pigs as Manure-M