238 INDEX 



PAGE 



Seed for cotton, Purebred 42 



Seed required per acre, Quantities of 226 



Seed sowers, Reference table for vegetable 229 



Seeds, Amount of oil in 208 



Seeds retain their vitality. Number of years 194 



Silage 56 



Small fruits 64 



Small fruits, Fertilizer for 19 



Soiling 56 



Soil requirements of apples 133 



Soils and other factors in relation to crop production in 



California 116 



Soils, Chemical composition of 25 



Solid measure, Cubic or 213 



Sources of natural plant food 33 



Sources of nitrogen 7 



Sources of phosphoric acid 5 



Sources of potash 6 



Spraying apple trees 141 



Square measure 202 



Square or land measure, Surface 212 



Stable manure, Content of . 20 



Stock, Relative value of different foods for 207 



Strawberries 65 



Straw, Grades of 99 



Strength of ice of different thicknesses 208 



Sugar cane in Porto Rico, Experiments on 78 



Sugar cane in Porto Rico, What nitrate did for an acre of 78 



Sulphate of ammonia 125 



Sulphur 125, 128 



Sulphur, Ground 128 



Sunstroke, How to treat 195 



Surface, square or land measure 212 



Surveyor's measure 208 



Sweet corn 57 



Thinning apples 139 



Time in which money doubles at interest 210 



Time required for complete exhaustion of available fer- 

 tilizing materials 222 



Tobacco 48 



Tobacco, Classification of 48 



Tobacco at Kentucky experiment station, Experiment on 51 



To find the number of plants to an acre 209 



Top-dressing experiments. Plan for 225 



Transportation of fertilizers, Cost of 187 



