INDEX 



249 



Rape cake as inanure,103 



Rape seed, 135 



Reaumur thermometer scale, 237 



Recknagel's phenomenon, 187 



Reduction, 9 



Rennet, in the dairy, 207 



in digestion, 169 

 Rennin, 185 

 Renovated butter, 205 

 Resin soap as insecticide, 232 

 Resins, 91 



Respiration of animals, 156 

 Rice, 124 



bran, 125 



polish, 125 

 Rise of sap in plants, 79 

 River water, 67 



muddiness of, 68 

 Rocks, classification of, 33 

 Root crops, 142 



hairs, 77 



pressure, 79 

 Roots of plant?, 77 

 Rotation of crops, 153a 

 Rye. 123 

 Rye straw, 124« 



Salicylic acid, 216 



Saliva, 159 



Sand, properties of, 42, 43 



Sandstones, 36 



Sarcine, 157 



S ircolactic acid, 158 



Scheele's green, 225 



Schweinfurth green, i'2i 



Sea water, 70 



Seaweed, as manure, 102 



Sedimentary rocks, 33, 36 



Seed, formation of, 82 



Semipermeable membranes, 78 



Serradella, 149 



Sewage as manure, 104 



Shales, 86 



Shoddy manure, 102 

 Silage, maize, 128 



sour, 153 



sweet, 153 

 Silicon, functions in plants, 92 



occurrence of, 22 

 Skatole, 161 

 Skimmed milk, 203 

 Soap, action on hard water, 64 



nature of, 90 

 Sodium, occurrence of, 20 

 Soft corn, 126 

 Softening of hard water, 65 

 Soils, analysis of, 59 



composition of, 42 



definition of, 33 



fixation of nitrogen in, 56 



formation of, 38 



gases in, 56 



retention by, 47 



sedentary and transported, 37 



\9ater in, 57 



why cold, if wet, 75 

 Soot as manure, 103 

 Sorghum, 129 

 Specific heat, 71 

 Spontaneous combustion, 11 

 Starch, 84 

 Steapsiu, 160 

 Stems of plants, 79 

 Stomata of leaves, 80 

 Subsoil, 33 

 Sugars, 87 

 Sugar-beets, 143 



leaves of, 150 

 Sugar cane, 150 

 Sugar mealies, 127 

 Sulphate of ammonia, 108 



of potash, 113 

 Sulphur, functions in plants, 92 



occurrence of, 17 

 Sulphur and lime dips, 227 



dioxide, 32, 213, 231 



