INDEX 



353 



Sulphides, effect on plants, 235, 



323 



Sulphur in plants, 5 

 Superphosphates, 214 



,, application of, 



222 



,, bone, 244 



,, compared with 



basic slag, 

 232 

 ,, composition of, 



217 



double, 218 

 ,, manufacture of , 



216 

 ,, manurial value 



of, 221 



Surface tension, 60 

 Swedes, composition of, 169 



,, manure for, 196 

 Symbiosis, 14, 138, 14(5 

 Sylvine, 281 

 Sylvinite, 281 



TALC, 23 



Tannery refuse as litter, 314 



Temperature of soils, 74, 82 



Tenacity of soils, 85 



Tetracalcic phosphate, 230 



Texture of soils, 50 



Thallophytse, 137 



Tilth, 87 



Thomas & Gilchrist process, 226 



Thomas' phosphate. t$ee Basic 



slag. 



Tomatoes, manure for, 199 

 Total acid extract of soils, 121 

 Transpiration, 73 

 Tricalcic phosphate, 207, 216 

 True specific gravity of soils, 56 

 Truffont's manure for straw- 

 berries, 201 

 S.M. 



Turnips, composition of, 169, 194 

 manure for, 196, 199, 287 

 Tyrosine, 154 



ULMIC acid, 109 



Ulmin, 109 



Unit values of manures, 335 



Unmanured plots, yield of, 173 



Unoccupied space in soils, 54 



Unstratified rocks, 29 



Urea, 154 



Uric acid, 294 



Urine of farm animals, 308 



Uruguay guano, 296 



Uruguay meat meals, 246 



VALUATION of manures, 332 



Vegetable manures, 292, 301 

 ,, soils, 48 



Venezuela guano, 296 



Vine manure, 287 



Vetches, 143, 301 



Voelcker on composition of apa- 

 tite, 209 



Voelcker on composition of cal- 

 cium cyanamide, 273 



Voelcker on composition of drain- 

 age water, 98 



Voelcker on composition of farm- 

 yard manure, 325 



Volatile matter of plants, 4 



Volcanic rocks, 29 



Volume weight of soils, 56 



WARINGTON on composition of 



rain water, 17 

 Warington on composition of 



crops, 169 

 ! Warington on composition of 



manure, 308, 325 



A A 



