Analytical Chemistry. 115 
and it is possible that bases of a still higher order exist. Wurtz remarks 
that these bases cannot be reduced to or derived from the ammonia type, 
whence it follows that there may be, among the neutral bases containing 
oxygen, bodies which are not compound ammonias, that is, which cannot 
be considered as derived from ammonia by substitution.— Comptes Ren- 
G 
dus, liii, p. 338, W. G 
8, On Acetylene.—Bzrtue or has found that when graphite is intensely 
eated by means of the galvanic current in an atmosphe > 
with gas-carbon and with purified wood-charcoal, though in this last case 
with much greater difficulty, perhaps in consequence of the difficulty of 
heating the very porous mass to the requisite high temperature. Carbon 
%¢s not combine with chlorine, bromine, or iodine under the circum- 
stances in which acetylene is formed, nor can pure carbon be made to 
combine with pure nitrogen. The spark of Ruhmkorff’s apparatus gives 
no acetylene with pure carbon and hydrogen.— Comptes Rendus, liv, 
1042, 1070, agg 
9. On a new series of compounds containing Boron.—FRaNKLAND has 
given a further account of the compounds of boron with ethyl, &c, 
already noticed in this Journal. Boric ethid, B(C,H,),, combines with 
‘mimonia with great energy to form an aromatic, oily, alkaline liquid, . 
which has the formula B(C,H,),--NH,. Boric methid, B(C,H,), is 
; 108137 er a pressure of three atmospheres at a temperature of 
‘i C, it condenses to a tr nsparent colorless liquid. It is sparingly 
ei 
y 
three equivalents of oxygen are replaced by three of methyl— 
ie Royal Society, vol. xii, 123. - w. 
— CuEmistry, | : 
“: Behavior of Magnesia Salts towards Carbonate of Ammonia.— 
fete nds aint the sinabuaitti common in treatises on analytical chem- 
liane '8 incorrect, that carbonate of ammonia precipitates magnesia salts 
Perfectly or not at all, and that any precipitate formed, may be redis- 
«<4 by chlorid of ammonium. If dilute solutions of sulphate of magne- 
tia, chlorid of ammonium and carbonate of ammonia be mingled, a gran- 
. Precipitate is formed in ten minutes or 80; the less time being required 
Pen carbonate is in greater excess. The precipitate thus produced is the 
aa: 
8 salt is decomposed by a little water, carbonate of ammonia being 
“ssolved, and sisbetahe of magnesia remaining. It dissolves completely 
