486 Scientific Intelligence. 
pressure of 4°™ of mercury. The first of the above liquids being 
. apy j OH 
ethylidene monochlorhydrin CH (| > the author regards the 
‘ : -4 CH,CHCI ) 
second as symmetrical mono-chlorethyl oxide CH CHC] (9 
analogous to ethyl oxide HCH’ Lo. This constitution he has 
verified by causing zine ethyl to react upon the body. The 
H,CHCH,CH, 
action is prompt and there results secondary 
CH meets CH, 
butyl oxide. Sodium ethylate gives the same e thylidene oxy- 4 
chloride in which one of the chlorine Soran is ae eo ced by 
oxethyl.— Ann. Chim. Phys., V, xxv, 219, February, 1 
c. F. B. 4 
On the Constitution of Quinones.—J arp and StTREATFEILD . 
have pointed out the probability that the reaction with aldehyde 4 
and ammonia belongs to the class of condensations in the ortho 4 
series and that consequently it ought not to be capable of exten- 4 
sion to para-quinones. Indeed they suggest this reaction as a E 
proof of the ortho- = ne in quinones. aving found that both 4 
benzoquinone and aphthoquinone yield with benzaldehyde a 
g. ro , 
hot eee silky needles were obtained of the composition 
Co HNO, peg benzenyl-amido-chrysol.—J. Chem. si ae 
157, April, 1882 es a 
Preparation of Alizarin-orange. — sison ‘Tie =a 
observed that if dinitro-oxyanthraquinone is suspended in boiling = 
water and very little of a 20 per cent solution of sodium hydrate 
be added, a deep red solution of the sodium salt is at first formed 
a 
ammonia to 100° for one hour in a sealed tube. On solution in 
B 
A 
ee ect 
siete is 
and then the color passes: into ae e, and a dark red flocky - 
sodium salt separates. This decomposed with HCl and the yel- ; 
low peuslve erystallized from glacial acetic acid, mare beautiful 4 
orange-red needles of a mono-nitro-alizarin, £- -nitro-alizarin.' It 4 
fuses at boat , and dyes orange with alumina, The ‘Tenet is: | ae 
C,,H,0,(O H) (NO,) ), + KOH=KNO, + C,,H,0,(NO,) (OH),. The: 33 
constitution of the ae is thus fixed.—Ber. Berl. Chem. — 
ahr xv, , 692, March, 1882. G. F. B. 
0 ¢ 
composed of several curves, and a special study is made of Glan’s _ 
photometer; the Siskrienent: is then applied to a very ae 
