274 Scientific Intelligence. 
. On the chemical constitution of Isethionic acid and Taurin—By the 
distillation of isethionate of potash with perchlorid of phosphorus, Kolbe 
has obtained a new acid which has the empirical formula OsHsClS:0s — 
and which he terms rate Lot oe acid. This acid yields taurin 
by the substitution of NH for Cl, and ethyl-sulphurie acid CaHeS08 
when the chlorine is simply fn by hydrogen. Kolbe d apa : 
allel between the derivatives of carbonic and d-valpba acids, 
best illustrated by the following tabular view ah 
C202. O02 Ba0e. ie 4 
ad 
Carbonic acid. Su Iphuri ¢ acid 
HO. (C4Hs)(C202). O HO. LCR 
aoa aaa Rt Ei eee 
Propionic acid. Ethyl-sulphuric acid. 
HO. (CaHsCl)(C202), O HO. (C4HsCl)(S204),0 
Chloropropionie acid. Chlorethyl-sulphurie acid. 
(C4HaCl)(C202), Cl (CaHTaC)(S20s), Ch 
Chlorethyl- -carbon-chlorid. Chlorethyl-sulfochlori, pi 
HO. (C+H4N H2)(0202), O HO. CsHaNH2) ($209), 
Amidosthyl-arbonie acid. Amido-ethyt-sulphore acid. os 
(Alanin) 
HO . (CaHls(H02)),(C202),0 HO. (cAt00) 8040 
Oxethyl-carbonic acid Oxethy Later Sharie acid. 
Lactic acid. Isethionic acid. 
The author promises a more detailed account of ee co sors in 
senesions god to in the above brief preliminary notice.— 
Chemie und Pharm., exii, 241. ak rere 
3. Researches on the atomic weight of Graphite. — Brovie pe toni 
nicated an exceedingly interesting and suggestive memoir on the fund 
hat of graphite, considered as an allotropic form of carbon, the iN Z 
tal idea being that the different modifications = oe ‘.— ordinal j 
oer exhibit a difference in equivalents, as as well pepe" 
a ou and physical properties. The pote finds that ee 
d ch 
Substance is thn to m be art first in a — then 
bss tore rapidly eg BoB the aplicktioi it heat. 
