10 CONTENTS. 



PAGE 



Climatic adaptations of apple varieties — Con. 



VI. The modifying effect of climate on the development of the 

 apple — Con. 



On general development, 205 



Apple belts in North America, 205 



Distribution of varieties, 207 



The relation of temperature to development, . .221 

 The mean summer temperature, . . . .221 



The winter minimum, 221 



The heat of summer, 222 



The effect of low and of high mean summer tem- 

 peratures, 222 



The optimum mean summer temperature, . . 227 



Chemical determinations, 232 



VII. Summary, 243 



Compilations, 246 



Analyses of fodder articles and dairy products, .... 247 



Composition and digestibility of fodder articles, .... 249 



Fertilizer ingredients of fodder articles, 266 



Analyses of dairy products, 272 



Coefficients of digestibility of American fodder articles, . . 273 

 Analyses of agricultural chemicals, refuse salts, phosphates, 

 guanos, ashes, lime compounds, marls, by-products, refuse 



substances and animal excrements, 304 



Chemicals and cefuse salts, 306 



Phosphates and guanos, 308 



Ashes, lime compounds and marls, 310 



By-products and refuse substances, 314 



Animal excrements, 322 



Insecticides, 323 



Analyses of fruits and garden crops, 324 



Fruits, 325 



Garden crops, 327 



Relative proportions of phosphoric acid, potassium oxide 



and nitrogen in fruits and garden crops, .... 334 



Composition of some Massachusetts soils, 339 



Description of types, 339 



Miscellaneous soil analyses, 341 



European standards for comparison, 346 



