A well-attended general meet-"ug of the International Amateur Radio Association of China, was helld at the Hongkew Fire Station on Thursday of last week, with the President, Mr. A. Bruce Puddicombe, in tha chair.
interesting lecture was given by Mr. S. Webb, the Vice-President, on the topic of "Primary Batteries." The lecturer, iiustrating his subject by de monstrations with apparatus, explained the construction and working of the simple voltaic cell, and the disabilities which had to be overcome before it could be employed as @ source of electrical energy. The possibilities of the primary battery were, he pointed out, of special significance to radio amateurs in China, account of the high initial 4 maintenance expenses of storage batteries. and the general isfactoriness of the various types off imported dry cells. A soties of experiments, using various electrodes and electrolytes, was conducted. Mr. Webb concluded his lecture, the first of a. series, with an explanation of the cause of polarisation in ces, and hinted at devices rely it could be overcome, or at least mimmized.
Text read from the printed page and cleaned; old type leaves the occasional error.