Page:Philosophical Transactions - Volume 024.djvu/336

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(1809)

tent, which was equal to 25 ounces ⁠1/2⁠ of Common Water, allowing for the Iron and Pedestal. This Air, produc'd from Gunpowder, I find to be actuated by heat and cold as Common Air: For, holding my warm Hands upon the Receiver, the Mercury in the Gage would immediately descend, and rise again when reduc'd to the temperature of the outward Air. This I repeated several times, with the like success. What more occurs in this Experi ment is, Why the Explosions of the like quantities of Gunpowder should be greater when Resisted by Air, than in Vacuo, where nothing seems to hinder the Extention of their flame.

VIII. Georg. Joseph. Camel. De Plantis Philippensibus Scandentibus; Pars Tertia. Ad Jacobum Petiver, S. R. S. nuper transmissa.

106.Cocculus Piscatorius, Levanticus, seu Orientalis, Indis laroan, Soma vel Suma, Lanta & Tuba. Universas Indias plurimis, maximisque abundare volvulis, omnibus, qui Indias adierunt, constat: Ad quod, ut opinor, plurimùm facit continua illa, & Indijs plerumq; omnibus communis, continuò vernans, & semper florens æstas. Hinc in Luzone, Rosa, Malva utraq; Belmuscus, Tuberosus, Hyacinthus, Pancratium, Matricaria, Gumamela, Stramonium, & nonnullæ arborum, nullo servato ordine aut tempore perpetuò florent. Ruta, Majorana, Cheyri, Betonica, Mentha, Faba, Cicer, Brassica, Carduus Benedictus, & alia Europæa nunquam florere visuntur; sed statu florem laturo, nova à radice protrudunt germina, ulteriori inservientia propagationi: Hinc Balimbin, Gamia, Papaya,Palan-

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