...And if it is progressive, as it would mark a great natural drainage being effected, it might furnish a hope that Africa will one day become a healthy continent... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...The valley sloped rapidly to this marsh, which received in its broad bosom the drainage of three extensive ranges...
Henry M. Stanley 「How I Found Livingstone」
...It was long ere light dawned on the ancient problem and gave me a clear idea of the drainage...
Henry M. Stanley 「How I Found Livingstone」
...Naturally the cutting of forests, clearing of brush and drainage ofmarshes is more or less calamitous to all the species of birds thatinhabit such places and find there winter food and shelter...
William T. Hornaday 「Our Vanishing Wild Life」
...Theonly record from the Pecos River drainage is that of (1951:314)from Wade's Swamp near Artesia, Eddy County, New Mexico...
Henry S. Fitch 「Occurrence of the Garter Snake, Thamnophis sirtalis, in the Great Plains and Rocky Mountains」
...The groundshould not be level, or at any rate, should have good drainage...
A. R. Harding 「Fur Farming」
...In Tamaulipas the beaver may occur only in theRío Grande drainage...
Ticul Alvarez 「The Recent Mammals of Tamaulipas, Mexico」
...The drainage andcultivation of the dangerous soils is the main object...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The mouth remains unaffected, andthe presence of the disease may be traced to filth and poor drainage...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Miller (1955a:177) found it in the conifers of the upper Corte Madera drainage at 7500 feet and up to 8800 feet on Loomis Peak in the Sierra del Carmen...
Emil K. Urban 「Birds from Coahuila, Mexico」
...However, the dip ofthe rocks has channelled drainage southward and erosion has cutnumerous, deep, parallel-sided canyons rather than a simple, retreatingescarpment...
Sydney Anderson 「Mammals of Mesa Verde National Park, Colorado」
...Ten drainage areas traversed aretabulated separately...
Sydney Anderson 「Mammals of Mesa Verde National Park, Colorado」
...Two traplines were set in the drainage, with trapping stations at intervalsof 25 feet...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
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