Note e — BOOK IV. (continued 2)

Concerning insensible Perspiration, Sanctorius observes, That it much exceeds all the Sensible put together. De Stat. Med. Aph. 4. That as much is evacuated by insensible Perspiration in one Day, as is by Stool in fourteen Days. Particularly, that, in a Night’s Time, about sixteen Ounces is commonly sent out by Urine, four Ounces by Stool; but above forty Ounces by insensible Perspiration, Aphor. 59, 60. That if a Man eats and drinks 8 l. in a Day, 5 l. of it is spent in insensible Perspiration, §. 1. Aph. 6. And as to the Times, he saith, Ab assumpto cibo 5 horis 1 l. circiter perspirabilis——exhalare solet, à 5a ad 12am 3 l. circiter; à 12a ad 16am vix selibram, Aph. 56.

And as to the wonderful Benefits of insensible Perspiration, they are abundantly demonstrated by the same learned Person, ubi supra; as also by Borelli in his second Part, De Mot. Animal, Prop. 168. who saith, Necessaria est insensibilis Transpiratio, ut vita Animalis conservetur.