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ABSTRACT LONDON. Chemical Society, December 13, 1900.—Prof. Thorpe, President, in the chair.—Prof. H. A. Miers delivered the Ram-melsberg Memorial Lecture.—December 20, 1900, Prof. Thorpe,

President, in the chair.—On the union of hydrogen and chlorine, by J. W. Mellor. The mixture of hydrogen and chlorine obtained by the electrolysis of hydrochloric acid always contains

measurable quantities of oxygen. A slight contraction occurs on mixing gaseous chlorine and hydrogen chloride.—The nitration of the three tolueneazophenols, by J. T. Hewitt and J. H.

Lindfield. The three tolueneazophenols are nitrated by warm dilute nitric acid, and in each case the nitro-group enters the phenol ring in the ortho-position relatively to the hydroxyl

group.—The bromination of the ortho-oxyazo-compounds and its bearing on their constitution, by J. T. Hewitt and H. A. Phillips. Ortho-oxyazo-compounds appear to react towards bromine as true

oxyazo-compounds, and not as orthoquinone-hydrazones.—On the use of pyridine for molecular weight determinations by the ebullioscopic method, by W. R. Innes. Molecular weight determinations

show that pyridine does not favour the association of dissolved substances; its molecular rise in boiling point is 29.5.—The influence of the methyl group on ring formation, by A. W.

Gilbody and C. H. G. Sprankling. The authors have determined the stability of phenylsuccinimide and its alkyl derivatives in alcoholic solution. It is found that the stability of the

succinimide ring is decreased by introducing methyl groups into the fatty ring, whilst Miolati has found that the introduction of fatty groups into, the aromatic ring increases the

stability.-Experiments on the production of optically active compounds from inactive substances, by F. S. Kipping.—A lecture table experiment for the preparation of nitric oxide, by A.

Senier.—The action of ethylene dibromide on xylidine and pseudocumidine, by A. Senier and W. Goodwin.—The action of phenylcarbimide on diphenyl-, dialphyl- and dinaphthyl-diamines, by A.

Senier and W. Goodwin.—Note on the action of nitrous acid on _β_-nitroso-_α_-naphthylamine, by A. Harden and J. Okell. On treating _β_-nitroso-_α_-naphthylamine in alcoholic solution with

potassium nitrite and hydrochloric acid, a salt of the composition C10H6O2N3K is obtained; this and the corresponding sodium salt, when treated with stannous chloride and acid, yield a

substance which is probably an imidazole of the following constitution— Access through your institution Buy or subscribe This is a preview of subscription content, access via your

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Academies_ . _Nature_ 63, 291–292 (1901). https://doi.org/10.1038/063291a0 Download citation * Issue Date: 17 January 1901 * DOI: https://doi.org/10.1038/063291a0 SHARE THIS ARTICLE Anyone

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