-APPARATUS FOR PRODUCING GAS PRESSURE FORSENSITIVE FLAME. of the house, and the approximate cost of the same,were published in the Architects and BuildersEdition of the Scientific American of April, 1888. … SUMMER Propagation of Parasites by Water. The great difficulty in establishing any fixed princi-ples in regard to the detection of micro-organisms inwater received an interesting illustration in a recentarticle in the Fortnightly Review. The writer (theHon. George N. Curzon, M. P.), in giving an…
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