I 
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 
