...long as the forests in and around them remain, but become very insalubrious when the woods are felled. Rigaud de Lille observed localities in Italy where the interposition of a screen of trees preserved the places beyond it from the miasmata on its other side. A few rows of sunflowers, planted between...

...preventing the diffusion of miasmatic vapors is a matter of less familiar observation, and perhaps does not come strictly within the sphere of the present...while the unprotected grounds were subject to fevers." f Few European countries present better opportunities for observation on this point than Italy, because...

...communicating disease. Mr. Marsh records the fact, that, in certain unhealthy districts of Italy, " the interposition of a screen of trees preserved everything...while the unprotected grounds were subject to fevers " ; and he adds, " the belief that rows of trees afford an important protection against malarious influences...

...importance will justify me in devoting some space to the subject. " It has been observed " (I quote from Becquerel) " that humid air, charged with miasmata,...are of so frequent occurrence that their efficacy in this respect can be easily tested. The belief that rows of trees afford an important protection...

...long as the forests in and around them remain, but become very insalubrious when the woods are felled. Rigaud de Lille observed localities in Italy where the interposition of a screen of trees preserved the places beyond it from the miasmata on its other side. A few rows of sunflowers, planted between...

...long as the forests in and around them remain, hut become very insalubrious when the woods are felled. Rigaud de Lille observed localities in Italy where the interposition of a screen of trees preserved the places beyond it from the miasmata on its other side. A few rows of sunflowers, planted between...

...communicating disease. Mr. Marsh records the fact, that, in certain unhealthy districts of Italy, " the interposition of a screen of trees preserved everything...while the unprotected grounds were subject to fevers "; and he adds, " the belief that rows of trees afford an important protection against malarious influences...

...charged with miasmata, is deprived .of them in passing through the forest. Rigaud de Lille obeerved localities in Italy where the interposition of a screen...everything beyond it, while the unprotected grounds were snbject to fevers." * Few European countries present better opportunities for observation on this point...

...Natur, vol. 29, 1864, pp. 443, 449, 465, et seq. See also AXFRED MACRY, Les Forels de la Gaule, p. 107. in Italy where the interposition of a screen of trees...are of so frequent occurrence that their efficacy in this respect can be easily tested. The belief that rows of trees afford an important protection...

...in passing through the forest." In some localities in Italy the interposition of a screen of leaves preserved everything beyond it, while the unprotected grounds were subject to fevers. Rows of trees are planted with good success, as a protection against malarious influences, and especially...