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Excerpt from American Schoolhouses

It follows from what has been said about this matter of ground air and its impurities that the drainage of school grounds is an im portant consideration. In the first place it is unwise to select a. School site which receives the surface drainage of any contiguous ground, and especially if such ground is exposed or has been recently exposed to pollution from any source. Other conditions equal, it is always safer to select a site higher than any land in the immediate neighborhood. This, however, is often impossible. Schoolhouses must be built at times on flat ground, because there is no other place available. Where there is thus no choice in the matter of elevation, much future difficulty may be avoided by taking into account the rela tive opportunities for underdrainage and contiguous sources of sur face contamination.

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