Encyclopaedia Britannica: Or, A Dictionary of Arts, Sciences, and Miscellaneous Literature, Enlarged and Improved, เล่มที่ 1A. Constable, 1823 |
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หน้า 281
... drain for the water , and keep the way dry . The term is also used for the whole road , or military way . Where highways were to be made in low grounds , as between two hills , the Romans used to raise them above the adjacent land , so ...
... drain for the water , and keep the way dry . The term is also used for the whole road , or military way . Where highways were to be made in low grounds , as between two hills , the Romans used to raise them above the adjacent land , so ...
หน้า 359
... drain such soils by hollow channels below ground , as the water will never be able to filtrate through the soil so as to reach the drain . In such situations , there- fore , open draining is the only mode that can be adopt- ed for ...
... drain such soils by hollow channels below ground , as the water will never be able to filtrate through the soil so as to reach the drain . In such situations , there- fore , open draining is the only mode that can be adopt- ed for ...
หน้า 360
... drain . Besides all this , an experienced Carse farmer takes care that his lands be carefully ploughed , and laid up equally without in- equalities that can hold water , and that the ridges be gradually rounded , so that the surface ...
... drain . Besides all this , an experienced Carse farmer takes care that his lands be carefully ploughed , and laid up equally without in- equalities that can hold water , and that the ridges be gradually rounded , so that the surface ...
หน้า 361
... drain , there will remain only nine or ten inches to support the foot of a horse exerting his strength in the act of plough ing , which upon a porous soil seems scarcely sufficient . What are called main drains , which are those intend ...
... drain , there will remain only nine or ten inches to support the foot of a horse exerting his strength in the act of plough ing , which upon a porous soil seems scarcely sufficient . What are called main drains , which are those intend ...
หน้า 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 ...
ฉบับอื่นๆ - ดูทั้งหมด
Encyclopaedia Britannica: Or, A Dictionary of Arts, Sciences, and ..., เล่มที่ 1 มุมมองอย่างย่อ - 1823 |
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