60 Scientific Intelligence. 
180°. Fractionated over sodium, a liquid was obtained boilin 
constantly from 171° to 174°, entirely soluble in absolute alchohol, 
ether and chloroform in all proportions, and in fifteen er of 90 
per cent alcohol. Its behavior generally is that of a terpene, 
which its odor resembles. It absorbs oxygen with avidity and 
resinities, which fact ne aes its variable boiling point. Sul- 
phuric c acid turns it brown a dissolves it; water sets it again 
fre 
converts it into paratoluic wid terephthalic acids. Elem mentary 
analysis gave 88°74 of carbon, and 11°48 of hydrogen, nearly cor- 
responding to the Rhee ula G,, ig: Suspecting an associated 
hydrocarbon poorer in hydrogen, the authors plane rized the 
A 
conjecture. Hence the neon gts ol of Cloez is a mixture of cymol 
with a terpene, which may be called eucalyptene. It is probable 
that not over 30 per cent of cym ated is apres nt. The significance 
of these facts, in view of the pro nee assigned to the leaves 
and ethereal oil of this shige in ee Sec one of the day, is ob- 
vious.— Ber. Berl. Ges., vii, 63, Jan., 1874. G. F. B, 
3. Compounds of Th hallium with Se eee, aS ug 
the atomic weight of thallium has been fixed from its specific 
sisig as determined by Regnault, yet its analogy with lead on the 
ne hand and with potassium on the other, renders a determina- 
ae of the vapor-density of some of its organic compounds desira- 
ble. Hartwic has ore undertaken, in the laboratory of 
of thallium-diethy! is obtained, according to the following equa- 
tion : 
TIC1,+-Zn(C,H,),=Tl(C,H,),Cl+4ZnCl,. 
The chloride separates as a cream-like mass which is purified by 
=rirriomensorent7 from hot water. It forms beautiful satin-like 
Sk. S ecaaue uished clearly odin ioe ae ch tin, mer- 
“7 or lead forms with the alcohol radicals by the fact that they 
undergo no decomposition on treatment with silver oxide. By 
decomposing the sulphate with barium hydrate, thallium-diethyl 
hydrate was nis d. It is twice as soluble in = as in hot 
water, crystallizes in fine silky needles, and decomposes wit 
explosion at 211°, Its solution blues red litmus pee strongly, 
may be passed through it without the formation of a trace of car- 
, 
c 
| 
' 
