CONTENTS. 



Vll 



CHAPTER III. 

 Various Manures. 



George Ville's investigations 

 Elements of which plants are composed 

 Organic ; barnyard manures .... 



Green manures ; oil cake .... 



Guano ........ 



Mineral fertilizers ; nitric fertilizer 



Nitrate of soda ...... 



Sulphate of ammonia ; phosphoric fertilizers . 

 Potassic fertilizers ..... 



Calcareous fertilizers ..... 



Comparative results obtained with chemical fertilizers and ordinary barn 

 yard manure — beets ..... 



Champignon and Pellet's experiments ; experiments of Corenwinder 

 Choice of a manure ; experiments of Deherain 

 Experiments of Pagnoul .... 



Vivien's views ; George Ville's complete fertilizer 

 Corenwinder's experiments; Coignet's views 

 Joulie's experiments ..... 



before sowinji 



CHAPTER IV. 



Sef.ds and Sowing, 

 Generalities ; analysis of Champignon and Pellet 

 Germination 

 Humidity 

 Heat ; air . 



Light ; treatment of the seet 

 Time for sowing . 

 Depth of planting 

 Distance most favorable 

 Sowing broadcast . 

 Transplanting 



Mechanical devices for sowing 

 Changes during vegetation . 

 Rain ; experiments of WalkhofF 

 Heat ; experiments of Champigon and Pellet 



for the roots 



PAOE 



12.5 

 12G 

 127 

 129 

 130 

 131 

 133 

 13.5 

 137 

 138 



140 

 144 

 145 

 148 

 149 

 150 

 151 



152 



155 

 156 

 157 

 158 

 161 

 163 

 165 

 169 

 170 

 171 

 173 

 174 

 175 



CHAPTER V. 



Production and Improvement of the Seed of the Sugar Beet. 



Hereditary principles . . . . . . . . . .176 



Characteristic points of beets rich in sugar ; choosing of the mothers to 



be planted . . . 177 



Knauer's machine for dividing the roots according to their weight . .178 



