88 Comparison of the Blowpipes of Hare and Brook. 
Lavoisier, as is well known, by directing oxigen gas upon 
burning charcoal, succeeded in melting and volatilizing some 
gabttances, wiieh; till that time, had been considered as = 
fusible and fixed. (Mém. de l’Acad. 1782 et 1783). 
melted alumine, and many of its mixtures; but i a oa 
istry and Mineralogy, who had comusiohatadel in the early ex- 
periments of Mr. Hare, performed new ones, which were 
published in 1813, in the first volume of the Memoirs of the 
Connecticut Academy 2 and Spaporss we Proceed 
_. Alumine was 95 meted into a milk white enamel. 
* 4 3 e . , into a Se calsaglans o3 
_ Barytes and strontian ose a grey ish white enamel. - 
Glucine and. Zircon were perfectly melted into a white 
enamel.» 
Lime, prepared by the piinieaion of Carrara marble, w was 
melted into a perfectly white and brilliant enamel. 
The splendor of the light was such that the eye, when na- 
ked, and even ee protected by deeply: coloured glasses, 
ed at the angles, and gradually to sink down; and i in a few 
seconds, there remained only a small globular mass. 
Magnesia was affected almost exactly as lime; the light 
reflected was equally vivid ; the surface was “melted into 
small vitreous globules, _ 
latina was not only melted, but volatilized with strong 
ebullition. 
JA pipe Ne of euperalss ‘such as rock crystal, chal- 
cedony, -b eruvian emerald, peridot, (chrysobery]} 
amphigene, vaca) disthene, tapers corundum, zircon, 
Spinel-ruby, &c. melted with thegreatest facility. _ 
: “Tn subsequent experiments, which Mr. Silliman has com- 
nic: ~ as platina, gold, silver, and many other met- 
als were not only rapidly vaporized, but entered, at the 
same ae into beautiful and vivid combustion. 
