Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products . 4SIZE. PORT MACKAY. THE SOILS OF THE CAXE-GROWIXG REGIONS 65 the basic rocks, which are mainly found in regions of comparatively recentvolcanic activity. The soils formed from the acidic rocks contain in generalmore potash than do those of a basaltic origin, these being characterizedby the presence of larger quantities of iron and of lime. The following figures, due to Burgess- as the mean result of the anahsisof 1547 American mainland soils, and of 515 analyse
Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products . 4SIZE. PORT MACKAY. THE SOILS OF THE CAXE-GROWIXG REGIONS 65 the basic rocks, which are mainly found in regions of comparatively recentvolcanic activity. The soils formed from the acidic rocks contain in generalmore potash than do those of a basaltic origin, these being characterizedby the presence of larger quantities of iron and of lime. The following figures, due to Burgess- as the mean result of the anahsisof 1547 American mainland soils, and of 515 analyses of Hawaiian soils,illustrate the differences in composition between soils derived from acidicand those from basic rocks. The anahses were made by official Americanmethod, , digestion in hydrochloric acid of sp. gr. 1-115 for 10 hoursat 100° C. silica ..Soluble silicaPotashSoda . .LimeMagnesia American. Hawaiian. 85-5^6-400-40027 0-750-68 32-63 17-59 0-34 0-35 1-30 American. *02 ?Manganese oxide 0i2 Ferrous & ferric oxide 3* 81 Alumina .. .. 5^5 20-72 Phosphoric acid o-16 035 Sulphuric a
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsugar, bookyear1921
