X CONTENTS. 



Milk and dairy produce genercdly. 



Composition of milk, p. 163 



Galactometer, 165 



Of butter, 166 



Proper temperature for churning, 167 



Reasons for its frequent bad quality, 168 



Purification of salt, 169 



Casein or curd of milk, 169 



Varieties and composition of cheese, 170 



Reasons why soils in dairy districts become exhausted of 



phosphates, 172 



Feeding of milch cows, 173 



Recapittdatton 



Of leading points, 176 



JVature of chemiccd analysis. 



Requisites for a good analysis, 187 



Care and skill necessary, 189 



Simple chemical examination of a soil, methods for, 192 



Examination of marls, 195 



Examination of guanos, 196 



applications of geology to agriculture. 



Unstratified and stratified rocks, 199 



Granites, 200 



Trap or basaltic rocks, 202 



Difierent strata form difierent soils, 202 



Of drift, and its influence on soils, 204 



Alluvial deposits, 206 



Value of geological knowledge, 206 



