380 Scientific Intelligence. 
ments of brick soaked in a solution of cupric sulphate.—Bull, 
Soe. Ch., U, xx, 74, July, 1873. G. F. B. 
4. On a Glycerin of the Aromatic Series.—In 1870, Grimavux 
discovered the first glycol or diatomic alcohol of the aromatic se- 
i He now describes the first glycerin or triatomic alcohol of 
ame series. Considering cinnamic alcohol or styrone as phe- 
nyl-allylic aleohol—being allyl alcohol in which one atom of hydro- 
gen is exchanged for phenyl, thus: 
CH CH(C,H,) 
2 
Allyl aleohol =CH PhenyL-allyl alcohol CH 
! 
CH,OH CH,OH 
Grimaux considered it probable that, like allyl alcohol, it would 
unite directly with two atoms of chlorine or bromine to produce 
the chlorhydric or bromhydric ether of a glycerin, Experiment 
confirmed this prevision; bromine produced the desired bromhy- 
r 
drin CHBr which was readily saponified by the action of 
OH,OH 
: CH(C,H,)OH 
| 
boiling water, yielding the corresponding glycerin CHOH 
cerin to indicate its origin points out its three isomers, de- 
d respectively from trimethylbenzene, methyl-ethyl-benzene, 
and isopropyl-benzene. The stycerin ethers with chlorine, bro- 
mine and acetyl are also described.— Bull. Soc. Ch., Ul, xx, 118, 
Aug., 1873. G. F. B. 
5. Elements of Physical Manipulation ; by Epwarp C. Pr 
ERING, Thayer Professor of Physics in the Massachusetts Institute 
of Technology. New York (Hurd and Houghton), 1873. 
H,OH 
To this pheno- or phenylglycerin, the author gives the name sty- 
igin. He poi 
CK- 
s 
departments of physical science. Professor Kohlrausch’ 
little book, “ Leitfaden der praktischen Physik,” is alt ical 
and only one that treats of physical investigat 
and systematic manner, but it is somewhat limite prs ith the 
18 Intended for students havin already some familiarity, Wi ing 
ba Biss of the details of adjustment and manipulation 
omitted. 
