16 FRUIT CULTURE. 



Total 100-0 100-0 



Organic matter 5" 72 . . . 6'60 



Lime . . . 1'05 . . - 0'99 



Potash . . . 0-45 . . . 0-10 



Soda . . . 0-07 . . . 0-10 



Magnesia ; . . 1'21 . . . 1'91 



Phosphoric acid . 0'23 . . . O'll 



Iron oxide . . 4'67 . . . 7'29 



The high percentage of iron oxide as shown above, is 

 probably the chief contributing cause of the brightness 

 in colour of the Californian fruit. 



We will now give some analyses of English soils, by the 



"late Dr. Volcker, as affording good examples of the more 



frequent and important varieties of soil in the British 



Isles, adding such remarks as may appear applicable to 



each. 



1. COMPOSITION OF A CALCAREOUS CLAYEY SURFACE SOIL. 



Selected Constituents in 100 parts. 



Per cent. 



Organic matter 1T08 

 Clay . . 52-06 

 Sand . 24-53 



Per cent. 



Lime . . 11-53 

 Potash . . 0-32 

 Phosphoric acid 0'12 



Such a soil for fruit growing requires only to be kept 

 up to its present condition of fertility, which may be done 



