2O6 COFFEE : ITS CULTIVATION AND PROFIT. 



Famine Commissioners, u is in the discovery of 

 phosphatic rocks, or coprolites, in accessible parts 

 of each agricultural district." 



Sawdust is said to have a wonderful effect on 

 garden crops, and experiments might be made on 

 a few bushes with some from the nearest sawpit. 

 Wood ashes are rich in potash and phosphoric 

 acid. The prunings of the bushes with the lighter 

 weeds buried in trenches between the rows tend 

 also to keep up the fertility of the soil, as do 

 the leaves falling from shade trees, and the annual 

 clearings out of drains, water holes, &c. 



Lime, though not strictly speaking a manure, 

 is of the utmost value in many soils. We obtain 

 this in the form of burnt shells, marine and fresh 

 water, such as are used for preparing shell chunam. 

 They yield an almost pure carbonate of lime, con- 

 taining an exceedingly small quantity of impurities. 

 After being slacked it forms a light powder, which 

 can with great facility be used on the land ; or if 

 an estate is deficient in this generally abundant 

 element, it is replaced in the form of gypsum, or 

 native lime stone. 



Professor E. W. Hilgard, in discussing the 

 " Objects and Interpretation of Soil Analyses," 

 rives, among other things, the following advantages 

 resulting from an adequate supply of this mineral 

 in soils : i. A more rapid transformation of vege- 

 table matter into active humus, which manifests 

 itself by a dark or deep black tint of the soil. 



