406 Scientific Intelligence. 
of. carbon, appears to demonstrate, in a positive manner that these com- 
pounds do not contain oxygen, and are really binary substances. 
(7.) All fluorids, even those of potassium} sodium and calcium, are 
rapidly decomposed by the vapor of water. 
8.) Oxygen and chlorine, at a strong heat, decompose fluorid of calcium, 
and set free a gas which appears to be fluorine 
-) The vapor of sulphur does not act on fluorid of calcium, but 
this body is decomposed completely by the vapor of sulphid of carbon; 
there is formed in this case sulphid of calcium,. and probably fluorid of 
carbon ; the presence of silicious matters facilitates the reaction. 
(10.) The analyses of the principal fluorids which are cited in this 
memoir, as those of the fluorids of potassium, sodium, calcium, tin, lead 
and silver, show that.the equivalent of fluorine, determined by Berzelius, 
is ex 
(11.) All the anhydrous fluorids, when fused, may be decomposed by 
the galvanic battery i i i 
s, 
of the fluorid A ae de Chimie et de Physique, xlvii, 5, May, 1856 
Lficia 
_ 10. On Acetylamin.—Nataxsox has more fully described this very 
H CsHs 
H NO,HO= H $4 ono, ~ 
H H 
The decomposition begins at 150° C.; the acetylamin distils over at 220°, 
as a slightly yellow liquid of peculiar ammoniacal persistent smell. It 
ous at 218°, and is soluble in all proportions in water and alcohol, but 
not in ether. The density of its vapor was found to be 1-522=4 vols. 
By union with acids it forms salts of acetyl-ammonium, from which it is 
very remarkable that potash precipitates the hydrate of the oxyd of 
acetyl-ammonium and not acetylamin. The author describes an ethyl 
ty n acetylamin—Ann, der Chemie und Pharmacie, 
xevili, 287, 291, June, 1856. ah on 
11. The Manufacture of Malleable Iron and Steel without Fuel, (Proe. 
Brit. Assoc., ~eut 1856; Ath. No. 1504.)—At a a of the British — 
the 
; Advancement of Science, held at Cheltenham in August 
ast, Mr. H. Bessemer read a highly interesting and important paper oD 
the manufacture of malleable iron and steel without fuel. For two years 
