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" From 8 to 9 Ibs. of Newcastle coal would, with this engine, be found to do the same quantity of work. I have drained two districts of fen-land, near March, in Cambridgeshire, where the engine's power bears about the proportion of 10 horses... "
Outlines of a new plan for tilling & fertilizing land - الصفحة 98
بواسطة Thomas Vaux (agriculturist.) - 1840 - عدد الصفحات: 214
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De Bow's Commercial Review of the South & West, المجلد 3

James Dunwoody Brownson De Bow - 1847 - عدد الصفحات: 640
...Flora S to 9 Ibs. of Newcastle coal would, with this engine, be found to do the same quantity of work. I have drained two districts of fen-land, near March,...Cambridgeshire, where the engine's power bears about the'proportion of 10 horses power to 1,000 acres of land, and the water can always be kept down to...

The Farmer's Magazine

Staff - 1838 - عدد الصفحات: 514
...to nine pounds of Newcastle coal would, with this engine, be found to do the same quantity of work. I have drained two districts of fen-land, near March,...the engine's power bears about this proportion of ten horses' power to 1000 acres of land, and the water can always be kept down to any given distance...




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