Full text: Medicina Statica

314 Medicina Statica . Sedi . VII . 
Pcrfpiration , which Difcharge makes the Body lighter , what is yet of ufe to the Elafticity of the Fluids , and the lois of which leaves the Body weaker , that is , more perceptibly heavy : But the latter Paf - fions of Grief and Fear , render the Body heavier , not by any Expulfion of Spirits , which preferve it ceptibly light , but by flackening Motion and Con - coftion , whereby the fupply of Spirits is cut off ; and this Confufion we are often led into for want of due Attention to Anatomy , and the true Mechanifm of the Animal ( Economy , which our Author muft be allowed to luve been extreamly defective in , not - withftanding the Excellency , Juflnefs , and Ufcful - pefs , of moll of his Statical Experiments . 
" A Continuance of Joy feveral Days together , " would hinder Sleep , and fink the Strength . 
i Explanation . ] Becaufe it would by a long conti " nuance , give fuch a Straitnefs and Rigidity to the Nerves , as would prevent thofe Relaxations which are necefiary to Sleep , and alfo for fuch ons of Spirits to the Solids , as arc needful to keep up the ufual Vigour . 
A P H . XXIX . 
. " If any one after immoderate Joy perceives " himfelf lighter , it does not chiefly arife from ii " total Pcrfpiration , but only from that of the " Heart and Brain , where what is evacuated , is il but little in Bulk , but of great Efficacy . 

Explanation . ] Here again is charged upon an imaginary perfpirable Matter , what is owing to an additional Invigoration of the Solids by the In - creafe of Spirits ; and as the Paffion of Joy more immediately afie & s the principal Movements of the 

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