Cement for Glass. A rood cement orf
glass, and one whleh completely ri-dsts
the solvent action of water may. it is
said, be prepared by she following pro
cess: From 5 to 10 parts of pure, dry
golatine are dissolved in 100 parts of
water, lo the solution about 10 per
cent of concentrated solution of bichro
mate of potash. Is added, and the liquid
is kept in t .e dark. When articles
joined by this cement are exposed to
the light, the gelatine film is acted on
ny the chemical ravs, the curomate be
ing partially reduced, and the film of
Anient becomes tough and durable.
Wasnrnv is a holiilay, thanks te
JrobMiia Electric Soap, (maJe by Cra
gln & Co.. rbi'.a.,) which I rapidly
cominc Into general nse. It sets like
roazlc. and bleaches rlotbinir without
Injuring the fabric. Try it.
Sjar aud Calomel. To the resear
ches made by M. Jolly appears to be
due the Yaluable discovery, a relating
to tbe changes that may take place in
the stomach, that really pure sugar
has no effect on calomel, but that many
uzars are sold in whicn a small ior-
tion of lime hydrato Is left; tbey are
white, but bare only undergone tbe
first crystallization. Further, some of
the sugars of commerce are acid, and
the fact Is established that either acids
or alkalies will determine the change
ot calomel. M. Jolly has found that
calomel loxenges made in Paris are free
from bichloride, but It Is known that
in Italy several chemist have detected
ic In lozenges: tbe latter might be due
of an Impure sugar, showing, therefore,
the necessity of that article being tes
ted by pbarmac'sts and lozenge makers.
