118 



an ounce or two would be sufficient — to examine this again in a 

 freslily excavated specimen. Liming would aid the j)assage of the 

 lower into the higher oxide. Phosj^hates are wanting in Nos. V. 

 and VI., and are especially necessary for garden allotments. The 

 addition of this in manure is easy, and the allottees should be told 

 that the saving and application of their liquid manure and night- 

 soil to this land would be especially beneficial. Soda salts are also- 

 wanting, and should be supplied in the manure. Even if trench- 

 ploughing does not succeed at first, I have little doubt of its doing so in a 

 very short time from the decomposing powers of the chalk in the uj^per 

 soil upon the undisintegrated parts of the sub-soil. 



I shall be delighted to give you any further information in my 

 ])Ower, or to furnish any explanations which you may desire, and I have 



the honour to be. 



Your faithful servant, 



LYON PLAYFAIR. 



W. RoBSON, Esq. 



