CHAP. IV. ] ST. THOMAS TO BERMUDAS. 325 
kinds, which are non-nitrogenous, are largely increased by nitrogenous 
manures. 
The direct supply of phosphate in an assimilable form largely in- 
creases the turnip crop, while the same supply to the wheat crop, which 
is especially phosphatic, scarcely increases the yield. 
The best natural fertilizer is doubtless farm-yard manure, or good 
stable-dung. When this can not be procured, the artificial manures, 
such as guano-sulphate of ammonia, are valuable, especially on soils 
rich in the mineral constituents of plants, such as the Bermuda soils. 
The application of these nitrogenous manures would doubtless consid- 
erably increase the non-nitrogenous arrowroot crop, and probably the 
banana. I regret I have not an analysis of the ash of the banana to 
which I can refer. 
These soils, were they in England, would doubtless produce large 
crops of wheat when manured with nitrogenous manures; and there is 
little doubt they would in a climate such as Bermuda. 
Much interest would attach to experiments showing the power of 
these soils for the absorption and retention of ammonia and water. 
However, time precludes this at present. 
Freperick A. Mannine. 
SOIL IL—RED EARTH. 
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Trees SOAS AOS Cree BORO COORG Merc then: 13°604 
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Soluble in strong j Lime.. iyaheuse stats ates ed ore eclo useless eeactoneeh ets, LOIS O04: 
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Phosphoric acid (estimated in nitric acid solution)... .. 0°626 
100°656 
