Encyclopaedia Britannica: Or, A Dictionary of Arts, Sciences, and Miscellaneous Literature, Enlarged and Improved, àÅèÁ·Õè 1A. Constable, 1823 |
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˹éÒ 361
... drains , I order my bricks to be moulded ten inches long , four broad , and three thick ; which dimensions always make the best drain . " Preparation it is said that hollow drains seldom exceed 30 or of Land . 32 inches , and that more ...
... drains , I order my bricks to be moulded ten inches long , four broad , and three thick ; which dimensions always make the best drain . " Preparation it is said that hollow drains seldom exceed 30 or of Land . 32 inches , and that more ...
˹éÒ 362
... drain of Land . opposite to where the turfs were laid , as far as possible from the drain , so as none may get in again . A scoop , to clear out the fragments in the bottom , follows , which are also spread in like manner . They are ...
... drain of Land . opposite to where the turfs were laid , as far as possible from the drain , so as none may get in again . A scoop , to clear out the fragments in the bottom , follows , which are also spread in like manner . They are ...
˹éÒ 370
... drain , he began his main close drain the first week in June 1791 , three feet wide , on the declivity near the edge of the great bog . In the first operation he dug through the peat , the hard sand , and gravel , and one spade's graft ...
... drain , he began his main close drain the first week in June 1791 , three feet wide , on the declivity near the edge of the great bog . In the first operation he dug through the peat , the hard sand , and gravel , and one spade's graft ...
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Encyclopaedia Britannica: Or, A Dictionary of Arts, Sciences, and ..., àÅèÁ·Õè 1 ÁØÁÁͧ·Ñé§àÅèÁ - 1823 |
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