CULTIVATION OF FRUIT TREES AND FRUITS. 311 



PROPORTIONS. 



Flesh of the Pomfret Russet, an apple which may be preserved three years : 100 grains 

 contain, 



Water, 90-48 



Ash, 0-49 



Skin, 



Water, 78-26 



Ash, 0-51 



I had supposed that the keeping qualities of this apple were due to the inorganic matters of 

 the rind. It is, however, a doubtful question, which it is difficult to solve. It will be observed 

 that the alkalies abound in the pulp of the apple and pear ; that the proportion of ash is small, 

 but that it is rich in potash, soda, phosphoric and sulphuric acids. These facts have an im- 

 portant bearing on the treatment of fruit trees. It is evident they require more potash and 

 soda than they have yet received. 



Composition of the ash of the Esopus Spitzenburgh : 



Silex, 2-201 



Phosphates of lime magnesia and iron, 14-573 



Lime, 1-193 



Magnesia, 0-212 



Potash 32'897 



Soda 17-753 



Chlorine, 2-600 



Sulphuric acid, 7-261 



Carbonic acid, 16-221 



Coal and organic matter, 5* 130 



100-041 



Composition of the St. Germain Pear, or as it is named in the Albany market, Winter Bell 

 or French Bell Pear : 



Silex, 3-312 



Phosphate of lime, etc 18-072 



Lime, 0-242 



Magnesia, 0* 130 



Potash, 38-512 



Soda, 5-932 



Sulphuric acid, 9-875 



Carbonic acid, 18-012 



Chlorine, 0-400 



Organic matter and coal, 5-230 



99-717 



