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 rience convinced him, enim vero nos ipsi cum non ita pridem optimæ æruginis, quæ salinas uvarum particulas in cuprum ab ipsis corrosum coagulatas copiose continet, soiutionem pulcherrimè virescentem sale et nive congelassemus, figuras in glacie minusculas vitium speciem eximie referentes non sine aliquâ admiratione conspeximus. Yet the Abbe de Vallemont could quote this passage, and say of it, cette scule experience sufit pour fonder tout ce qu'on a raporté de la Palingenesie des plantes et des Animaux par leurs sels.

The beautiful forms of crystallization led to this notion, and the revivification of metals was supposed to be an analogous fact; a theory was all that was wanting, and this was found in the opinion that salts retained the nature and property of the body from which they were extracted; for this there was the authority of Geber, and it was an easy step to suppose that the essential form of all bodies was in their salts. But it