94 Oranges and Lemons of India. 



Mr. Waldie notes, " It will be observed that this is 

 a very siliceous soil, proceeding from the decomposition 

 of siliceous rocks alone. It contains no carbonate of 

 lime, and is a very open and porous soil " (p. 393 of 

 the above-named journal of the A.H.S. of India). 



Liebig's analysis of the ashes of the orange-tree 

 wood gives : 



45 Lime. 

 E Iron and manganese. | In 100 parts of the 



6 Silica. }- ashes insoluble in 



7 Magnesia. water. 

 1*9 Phosphoric acid. 



ico parts of the total ashes give 



Soluble in water ..... 

 Insoluble in water .... 



Parts loo'o 



And 100 parts of the insoluble ingredients give 45 per 

 cent, of lime, that is, nearly half the quantity of the 

 ashes, insoluble in water, is lime. 



But Mr. Waldie says that the Shalla soil sent him 

 contained only 0*19 in 100 parts, or less than -g- per 

 cent. 



The inference is that either Mr. Brownlow took his 

 sample from some one particular spot, or did not reach 

 the calcareous soil. 



The orange wood requires, it appears, a considerable 

 amount of lime to make healthy growth ; in Shalla, 

 oranges grow very well ; therefore, the soil of Shalla 

 should contain a considerable amount of lime. More- 

 over, it is hardly credible that in a district where lime- 

 stone forms one of the exports, that no lime detritus is 

 ever washed down with the floods, which are said to 



