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But, although a nearly universal experience proclaims this fact, there is a school which, following in the footsteps of Lancisi, maintains the contrary opinion, that it is necessary to preserve the forests in malarious districts, and even to increase their extent, since the trees filter the infected atmosphere and arrest the malaria in their foliage.
In 1718 Lancisi held that the myriads of insects, particularly gnats or mosquitoes, that arose from such swampy regions might carry some of these poisonous substances and by means of their proboscis introduce them into the bodies of the people, and although he had made no experiments to test the assumption he did not consider it impossible that such insects might also introduce the smallest animalculæ into the blood.
Mondino, Bertrucci, Salicet, Lanfranc, Baverius, Berengarius, John De Vigo, who first wrote on gun-shot wounds; John of Arcoli, first to mention gold filling and other anticipations of modern dentistry; Varolius, Eustachius, Cæsalpinus, Columbus, Malpighi, Lancisi, Morgagni, Spallanzani, Galvani, Volta, were all Italians.
The Ephemerides records a paroxysm of continual sneezing lasting thirty days. Bonet, Lancisi, Fabricius Hildanus, and other older observers speak of sneezing to death. Morgagni mentions death from congestion of the vasa cerebri caused by sneezing. The Ephemerides records an instance of prolonged sneezing which was distinctly hereditary.
This strange theory was formulated by Lancisi in 1714, on the occasion of the proposed clearing of a forest belonging to the Caetani family, and lying between the Pontine Marshes and the district of Cistema.
This work cannot be said to have originated with him; for as early as 1679 Bonnet had made similar, although less extensive, studies; and later many investigators, such as Lancisi and Haller, had made post-mortem studies.
Lancisi, one of the early students of disease of the heart, left an excellent monograph on the subject, and was the first to call special attention to the association of syphilis with cardio-vascular disease.
Lancisi was completely imbued with the paludal notion, and consequently believed that the very severe malaria of Cistema was brought by the winds from the coast marshes, instead of being produced in the soil surrounding the district, which was then covered by this forest. He believed then that the forest acted as a protective rampart, and he prevented its being cut down.
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