414 Scientific Intelligence. 
balanced while the fourth is free, the author gives for maleic acid 
CH. COOH 
the formula | and for fumarie acid || For 
=C. coon CH. COOH 
ma ae 
\ 
itaconic acid he gives cH . COOH, or C, COOH, for citraconic 
| . 
C 
H,. COOH H,. COOH 
tei CH, 
acid CH. COOH and for mesaconic acid c. COOH . Hence the 
=, COOH OH, COOH 
isobrommaleic acid of Kekulé is properly bromfumaric acid, and 
the dibrommaleic acid of Bourgoin, dibromfumaric acid. Of t 
two itaconie acid okey Fittig prefers the first.—Z — Ann s 
elxxxviii, 95, July, 1 
Ona Phenol of | Phenanthewie. Phenanthrol, i Rieke Ne ex- 
amined, under Graebe’s direction, the product obtained = fusing 
phe enanthrenemonosulphonic acid wit potassium hydrate. After : 
solution in water, the phenanthrol was separated in oily drops by 
the addition of. sulphuric acid, which solidified on cooling. After 
envi with sia Mga carbonate, and reerystallization from a 
are gg troleum naphtha and aha! = was 0 ort in 
beautiful pan tuseaslag plates, fusing at 112°, and giving 
analysis the formula (O t forms rival érystallized com- 
pounds with alkalies, ‘and ethers with acid oxides. , rl. 
Chem. Ges., x, 1252, July, 1877. 
1. Formation of Rosolie acid Jrom Cresol and Phenol. "The 
discovery of Caro and Wanklyn that by de-nitrogenizing rosaniline 
rosolic acid could be formed, and of Dale and Schlorlemmer, that 
aurin (rosolic acid) could be converted into Sieg Hong led Zut- 
KOWSKY to attempt the production of rosolic acid from cresol and 
phenol as rosaniline is produced from toluidine and Panflings A 
mixture of two molecules cresol, oe Pen) and three of sulphuric 
acid heated with arsenic acid to 120° C. became dark brown and 
thick and yielded to water a ist tod with a : arereh metallic 
luster, having all the properties of rosolic acid. It is = produced 
with pheno alone. The author represents rosaniline a 
CHA Ly on joe 
NH,. CH, | i and rosolic acid asOH . C,H, J 7 . ; 
CH, CH, Son Ar 
Corallin he ries = into five different bodies.— Ber. —_ Chem. 
7 = — 
» Co ehiape ee .—Hormann has upuniee a ee 
brilliant a coloring matter, obtained from Martius. He found it 
to be the sodium salt ofa an organic acid, which was separated by 
easily soluble in alcohol, less so in water, having t 
CH. O,, and being ‘monobasic, No doubt, f aeebore, ches 
