Canada a Geographical Agricultural And Mineralogical Sketch
Canada a Geographical Agricultural And Mineralogical Sketch
Canada Dept of Agriculture
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The gypsum con- sumed in Lower-Canada is chiefly brought from the Magdalene Islands in the gulf of St. Lawrence. These contain abundant deposits of this mineral, which is brought by water to Quebec and Montreal. The consumption of gypsum for agricultural pur- poses in Lower-Canada is however less than in the west, and might be increased with advantage. PHOSPHATE OF LIME. Among the most important discoveries of modern scientific agriculture is that of the" value of phos- phates as a manure. The ...beneficial effects of ground bones, and of Peruvian guano, of which last about 300, 000 tons are annually brought to Great Britain, are in a great measure due to the phosphates which these manures yield to the soil ; and within a few years, the use of a soluble phosphate, or superphos- phate of lime as an application to the soil, has been so much extended, that its manufacture has become a very important industry in Great Britain, France, Germany, and the United States, and has within the last few years been successfully attempted at Mon- treal.
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