Opinions From Others.

The Influence of Speed on Commercial-motor Design. The Editor, THE COMMERCIAL MOTOR. [1,391] Sir,—In reply to Mr. T. C. Aveling's letter under the above heaaing, appearing in......

Answers To Queries.

Sirdar Recomnaendations. The Sirdar Rubber Co., Ltd., writes to us with reference to Answer No. 1,827 in our issue for the 22nd of June, which was a reply to an inquiry......