INDEX. 



409 



PAGB. 



Schloesing's method of deter- 

 mination of nitric nitrogen 



104, 177 



Schcenite, composition of ... 165 

 Sea-weed, analyses of, from 



various sources 133, 134 

 ,, comparison with 



farm-yard manure 134 

 ,, experiment with 



potatoes ... 134 



Seeds, food material stored in 239 



,, formation of .. ... 238 



,, function of ... ... 238 



,, methods of extraction 



of oil from ... ... 205 



Selenite, composition of ... 15 



Serpentine, composition of ... 15 

 Shales, see ' ' Sedimentary 



rocks" 42 



,, soils formed by decay 



of ... ... ... 43 



Sharps, composition of ... 281 



Sheep, analysis of blood of ... 135 



,, ,, ,, excrements 



of ... 112 



,, calorific power of fat of 5 

 ,, excrements, amount of 



per day ... ... 119 



Silage, composition of ... 253 

 ,, preparation of ... 248 

 ,, "'sour," production of 248 

 ,, " sweet," ,, ,, 248 

 Silica, determination of in soil 97 

 "Silica" in analysis of super- 

 phosphate ... ... ... 174 



Silica in cereals ... ... 240 



Silicates of magnesia, various 



forms of ... ... ... 41 



Silicon, function of in plants 212 

 ,, occurrence of ... 17 

 ,, relative abundance of 19 

 ,, tetrafluoride, produc- 

 tion during manu- 

 facture of super- 

 phosphate 155 



Silos, changes occurring in 248, 249 

 Skatol, constitution and pro- 

 perties of 272 



Soap as an insecticide ... 377 



, , formation of ... ... 204 



,, in the bile 273 



Sodium, hydrogen sulphate, 

 application to ma- 

 nure heap ... 127 

 ,, function of in plants 213 

 ,, nitrate, see "Ma- 

 nures" , 140 



Sodium nitrate, comparison 

 with ammonium 



sulphate ... 147, 148 

 ,, nitrate, presence of 



perchlorates in ... 142 

 ,, nitrate, prices for 



three years of . . 144 

 ,, nitrate, valuation by 



"refraction" ... 178 

 ,, nitrate, world's con- 

 sumption of ... 144 

 ,, occurrence of .. 14 

 ,, relative abundance 



of 19 



Soils, absorption and reten- 

 tion by ... 60, 61, 62 

 ,, alteration of organic 



matter in . . ... 64 



,, analysis of ... ... 89 



,, application of salts to 60 



, , bacteria present in ... 77 



,, biology of 77 



,, black, of Russia ... 54 



,, chemical analysis of ... 92 

 ,, chemical analysis, 



shortcomings of ... 100 

 ,, chemical analysis of by 



Dyers method ... 101 



,, classification of ... 57 

 ,, colour of ... 52, 56 



,, definition of ... ... 38 



,, distribution of dis- 

 solved matter in ... 62 

 ,, emission of heat by 



manure in .. ... 64 



,, fertility of, circum- 

 stances affecting the 108 

 ,, formation of ... ... 44 



,, gases in ... ... 71 



,, ,, action in water- 

 logged soil... 72 

 ,, improvements of .. 109 

 ,, mechanical analysis of 91 

 ,, odour of ... ... 57 



,, origin of ... ... 38 



,, proximate constituents 



of 49 



,, reactions occurring in 58 



,, replacement in ... 60 

 ,, retention of substances 



by 60 



, , sampling for analysis ... 89 



,, sourness of ... ... 52 



,, transported ... ... 44 



, , water in ... ... 72 



,, water in, analysis of 



rainfall and drainage 73 



,, water in, condition of 72 



