Hare’s Blowpipe. 289 
degree blended with the supporting mass of lime. When 
the compound flame fell upon the lime, the splendor of the 
light was perfectly insupportable by the naked eye, and 
when viewed through deep coloured glasses (as indeed all 
these experiments ought to be) the lime was seen to be- 
come rounded at the angles, and gradually to sink, till in the 
course of a few seconds, only a small globular protuberance 
remained, and the mass of supporting lime was also super- 
lally fused at the base of the column for a space of half 
an inch in diameter. The protuberance as well as the con- 
tguous portion of lime was converted into a perfectly white 
and glistening enamel. A magnifying glass discovered a 
W minute pores, but not the slightest earthy appearance. 
+his experiment was repeated several times and with uni- 
form success ; may not lime therefore be added to the list 
of fusible bodies ? 7 
_ Clark, page 47.“ Lime in a state of perfect purity and 
in the pulverulent form being placed within a platinum cru- 
cible, and exposed to the flame of the gas blowpipe, its up- 
per surface became covered with a limpid botyroidal glass, 
resembling hyalite ; the inferior surface was quite black. 
lts fusion was accompanied by a lambent purple flame. 
This colour therefore may be considered as a characteristic 
ue of one at least of the oxydes of calcium.” 
with great difficulty exhibiting after fusion a white milky 
*namel with points of intumescence that were transparent. 
