On the Signs exh'ib'iled ly Animals, 8cc. 5^7 



acrofs fomewhat obliquely before, and conical towards the 

 tail. As the patient, before flie fell ill, had ufed a great 

 deal of milk and cheefe, M. Wilke was of opinion, that fome 

 of the eggs of thefe flies had been conveyed into her ftomach 

 in the rind of the cheefe. 



VIII. On the Signs exhibited hy Animals which indicate 

 Changes of the IVeather, ivlth Remarks on other Pro- 

 gnojlkatlons. By M. ToALDO *. 



1 



HE fluids and folids of organifed beings, and their ani- 

 mal machines, are confl;ru6tcd in fuch a manner that a cer- 

 tain degree of motion puts them in a good ftate, while an 

 augmentation or diminution of it deranges and deftroys that 

 ftato. Tlie fluids, which by their nature are eafily moved, 

 as well as the fibres, which are highly fufceptible of irrita- 

 tion, are readily aflecled by changes of the furrounding at- 

 mofphere, and fuficr from their impreflions, whether the 

 air varies in its weight or qualities, or is changed in regard 

 to its clafticlty. We find, among thofe who are found and 

 in perfcd; health, vivacity, good fpirlts, and great agilitv, 

 when the air is pure and elallic ; on the other hand, whca 

 the air becomes light and damp, and is deprived of its elaf- 

 ticity, it throws the body into a ftate of languor and debi- 

 lity. Valetudinarians, whofe conflitutions are delicate, or 

 who are advanced in life, are much fooner fenfible of the 

 imprcfl[ions occafiuned by changes of the weather than thole 

 who are ftrong and robufl:. In general the fenfes of men, 

 who in their way of life deviate from the fimplicity of na- 

 ture, are coarfe, dull, and void of energy. Thofe alfo who 

 are diftrafted by a thoufand other objects, fcarcely feci the 

 impreflions of tlie air; and If they fpcak of them to Ull up 

 a vacuum in their miferable and frivolous converfation, they 

 do it without thinking of their caufe> or eflefls, and withotU 



* l''iori) i\ii Miir'-rolagica! Ejfjys. 



ever 



