, again, above a certain height, as 300 or 400 feet, ma- heat, is not sufficient ; on the contrary, it appears that if only the soil whence malarial effiuvia have arisen laria is absent; but between these the disease is de- tense and’ plaintive sound, which can be heard to a structive and… … to the roofs of houses, where, metals to be joined are at- during the whole night, it emits plaintive murmurs tached to the negative pole of the accumulator ; and a The soil must be for a while after the manner of olian harps. carbon pencil, such as is used in ordinary arc lamps, is connected with…
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