Dr. Manson's Mosquito-Malaria Theory
نویسنده
چکیده
Mosquito Theory as expounded in his Gulstonian lectures. He thinks that the theory is rather a splendid instance of the "scientific use of the imagination" than one founded on sufficient fact, and considers that Manson has " relied too much upon two very dangerous and beguiling descriptions of l-easoning, namely, the teleiotic (teleological ?) and the analogical." Manson, of course, has never ventured to state definitely that the mosquito is the alternative host of the parasite : he has only advanced the hypothesis as an extreme-
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now, prevented the confirmation of Manson's discovery, lie was able to prove that in a certain species of the culex genus of mosquito (Culex Ciliaris. Linn.) the metamorphosis of the filaria required seventy to twenty days for its accomplishment. The important difference between his results and those of Dr. Manson is, that whereas Manson stated that only seven days were required for the metamor...
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