Chemistry and Physics. 203 
ne 
$3 95. Elthylic aldehyde forms with mercuric oxide a white 
non-crystalline compound, but does not give a colloid liquid.— 
oc. Royal Society, xix, p. 431. W. G. 
- On a new Synthesis of Acids.—Von Ricuter has given a 
new method of forming organic acids likely to be fertile in inter- 
&sting results. This method consists in acting upon N®, com- 
ds with potassic cyanide so as to produce the correspon 
tyanides, which are then to be boiled with an alcoholic solution of 
a 
®ontains an organic salt of potassium, from which the acid may 
ee, be obtained. Thus, in the case of bromo-nitrobenzol we 
ve 
: €,H,Br NO0,+KON=€,H,€y Br+KN9®,, 
this being the Only part of the process which is really new. 
nen treated in this manner, ortho-bromonitrobenzol (fusing point 
)» yields ortho-bromobenzoic acid, o€ 5B, 902. eta- 
monitrobenzol (fusing point 56° C.), in like manner yields meta- 
i 
7 5 
“orresponding chloronitrobenzols were also studied. ochloro- 
fusing point 84° C.) yields orthochlorobenzoie acid, 
ipteer ©8,. On the other hand, a chloronitrobenzol at 
“> ©.) gave chlorosalylic acid, which, when fused with potash, 
Spi salicylic acid.— Berichte der Deutschen Chem. Gesell., iv, 
W. G. 
4. On Gallein.—When pyrogallic acid is fused with phthalic 
ad, hydrous, or better ‘ak pdfs the fused mass dissolved in 
Water yields a new coloring matter in small 
edad it with a magnificent blue color, whi 
- JOUR. Sct.—Tumep Serres, VoL, II, No. 9.—SEPT., 1871. 
14 
