โ Scribed by Wm.C. Day
No coin nor oath required. For personal study only.
Dr. Wahl made some remarks on the industrial production of aluminium by electrolysis, supplementing his comments of last meeting. He referred to the process of M. Adolphe Minet, in operation industrially at CreiI (Oise), France. and which in essential parts was identical with that of Mr. Hall. Mr. Minet electrolyzes a bath composed of f,~rty per cent. of cryolite and sixty per cent. of chloride of sodium, maintained in the state of igneous fusion. The bath is continually regenerated by additions of alumina (or bauxite). The interesting point in considering the two processes, the speaker stated, was the different explanations of the operations taking place in the bath under the action of the electric current upon substantially the same components ; Hall claiming that the alumina undergoes electrolysis, the solvent fluorides being unaffected, and Minet that the fluorides are electrolyzed, the liberated fluorine acting upon the alumina, to form fresh fluoride, thus maintaining the bath, the explanation of M. Miner, the speaker held, to be the rational one. Adjourned. WM.
๐ SIMILAR VOLUMES
By-Laws of the INSTITUTE relating to Sections, under which the Sections would be empowered to admit to associate and corresponding membership others than members of the INSTITUTE. The President exhibited several specimens of the aqueous solution of the allotropic silver, described by Mr. M. Carey L
The revised By-Laws, which had been laid over at the last meeting, were adopted without alteration. The Treasurer reported that, in accordance with a recommendation made at the previous meeting, he had notified certain delinquent members of their arrears ; as a result arrears were made good in one