NEWS , 7 / 
Cn a oka. } Chemical Notices from Foreign Sources. 187 
Ele&rolysis.—D. Tommasi.—The author demonstrates its behaviour with hydrochloric acid with the formation of 
that when a galvanic current traverses several electrolytes, xantho-quinic acid, and the action of heat upon the latter. 
in order that there may be decomposition, the quantity of Preparation of Colouring- Matters by the Action of 
calories produced by the battery should be equal to the Aromatic Nitro-Derivatives upon Phenols and Poly- 
sum of the calories absorbed by each eleéirolyte augmented atomic Alcohols in Presence of Dehydrating Agents. 
by the gelories Sacessy for Serapning he otal Josip —H. Brunner.—From the Berlin Berichte. 
ance of the elecirolytes. y calories produced by the Teeiie os y 
battery he means those which are transmissible to the vapparatus for en Ne nk 
circuit, He has also collected facts concerning the ratio American Fournal of Science, cannot be intelligibly re- 
existing between the calories produced by the battery and produced without the accom an “ner illustration 
the calories absorbed by several votameters containing : i panying : 
water, saline solutions, or melted salts. na penis iy he Meanuractre of 
ik . — i indigo is sti 
esianey on He Solubnly 2] tee inane of costly, and its use in printing is attended with such in- 
Lime in ater: a " il > H ETL, pen ronveniences that the attempts at its produ&ion have been 
the Final Setting of Hydraulic Materials.—E. Landrin. py, present discontinued in the two great establish. 
The author shows that the calcium aluminates are soluble ments which had entered upon the undertaking. Among 
in water, and are hurtful in hydraulic cements. Hence . on, improvements have been the replacement of the oil 
the puzzolani, which contain no soluble aluminates, give "pier almonds and acetic anhydride by benzyline bro- 
excellent results. Ferric oxide plays a totally negative mide or chloride and anhydrous sodium acetate. Cine 
past in the setting of hydraulic coments, i . namic acid cannot be quantitatively transformed into 
Relation between Isomorphism, Atomic Weights: ,itho.nitro-cinnamic acid, which alone is capable of 
and Comparative Toxicity in Metallic Salts.—]. yielding indigo. A quantity of the para- acid is formed at 
Blake.—The author criticises the conclusions drawn by (he same time. Indoine is a new compound obtained by 
M. Richet from his experiments on fishes placed in solu pM, Baeyer from ortho-nitro-phenyl-propionic acid. It 
tions of metallic salts, on the ground that poisonous sub- presents certain analogies with indigo, but is yet distind. 
stances, if brought in conta® with mucous membranes, Anniversary Banquet to M. Chevreul.—On March 
ad differently from what they do when introduced into the th, a banquet was given by the French National Society 
Hoos: I Dp also be Semen that Sent toi > Agriculture to its President, M. Chevreul, in comme. 
ave very different coefficients of diffusion. two salts : Y fr 2 
af in water in the same proportion, still moration of the 50th anniversary of his election. 
if they come in conta@ with a mucous membrane like 
that which covers the gills, they enter the blood in very 
different proportions. The speed with which the salts, 
after having entered into the blood, are eliminated by the 
kidneys is not the same, and the local a&ion of the salts 
upon the tissue of the gills may also vitiate any conclusion 
as to the relative toxicity of the metals drawn from the 
experiments of M. Richet. 
Certain Physical Properties of Camphor Richloride, 
—MM, P. Cazereuve and Didelot,—This compound is 
insoluble in water, to which it imparts, however, its pecu. 
liar odour. It is clightly soluble in cold alcohol, but dis- 
solves to any extent at the boiling-point. It is very 
soluble in chloroform and in carbon bisulphide, and ex: 
tremely soluble in ether, liquefying even in the vapour of 
ether, From this solution it does not easily crystallise, the 
ether being retained energetically. -Camphor bichloride is 
insoluble in acetic acid, in which camphor dissolves. It 
is soluble in aldehyd, forming a liquid more dense than 
water. The specific gravity of camphor bichloride is 4'2; 
its melting-point is g6°. : 
Peptones and Alkaloids.—C. Tanret.—This paper is 
a reply to that of M, J, Béchamp in the last number of the 
Comptes Rendus. 
Yournal de Pharmacie et de Chimie. 
March, 1832. 
Chemical Studies on the Skeleton of Vegetables 
2nd Part).—MM. E. Fremy and Urbain,—From the 
Comptes Rendus. 
Decomposition of Racetnie Acid.—E. Jungfleisch.— 
Already noticed. ] 
Cinchona Tree yielding Cinchonamine,—G. Plan- 
chon.—A pharmacological paper. 
Study on Essence of Savory.~—=A: Haller.—Already 
aoticed. 
kinins. 
Yournal fir Praktische Chemie. 
No. 3, 1882. 
Further Contributions to the Chemistry of Bile. 
~G. Hiifner,—The author raises the question, What is 
the respective proportion of taurocholic and glycocholic 
acids in ox-gall in such cases where the gall at once 
crystallises on the addition of ether and hydrochloric acid, 
and in such where this experiment fails? It appears that 
the crystallisation it most complete and rapid where glyco- 
cholic acid largely predominates. 
An Air. Thermometer.—Designed by O. Pettersson 
and executed by F. Milller.—This instrament cannot be 
intelligibly described without the accompanying figure. 
Maltose,—Dr. E. Meissl.—The author examines the 
specific rotatory power, and gives the practical rule that 
the number of grammes of the acive substance in 100 c.c. 
of solution may be found to 4-005 grm. by reading off 
the degrees of rotation at 17°53" and multiplying by 0362. 
The rotatory pewer becomes less and less as the concen- 
tration and the temperature increase, and if seen by the 
sodium light it may be represented in a solution contain. 
ing P per cent of anhydrous maltose at the temperature 
T, by [a}JD=140'375—0'01837 P—0'095 T. The rotatory 
power of freshly-prepared solutions is lower by 15° to 20° 
-han that of old solutions or such as have been boiled. 
Maltose resists hydration under the action of diluted acids 
about five times more strongly than does saccharose. It is 
most readily converted into dextrose if heated for three 
Moniteur Scientifique, Quesneville, 
April, 1882. 
Azo-Colouring Matters.—O. Wallach.— An account 
of azo-benzin-resorcin and azo-toluen-resorcin, taken from 
the Berlin Berichte, 
Compounds of the Indigotic Group.—A. Baayen = 
A description of isatogenic acid, indoxylic ether and acid, 
ethyl-indoxylic acid, nitroso-ethyl-indoxylic acid, indo- 
xyle, ethyl-indoxyle, indoxyl-sulphuric acid, and disatogen, 
taken from the Berlin Berichte. 
Syntheses by means of Phenyl-acetylene.— MM. 
Baeyer and Landsberg, . 
A New Base Homologous with Quinoline.~MM., 
Deebner and Milleri—These two memoirs are also taken 
from the Berlin Berichie. 
Quinine and Quinidine.—Z, H. Skraup.—The author 
treats of the oxidation of quinine, of quinic acid and i 
salts, of the acetylisation and oxidation of quinic acid, o