Renewable Valve Seats.

The sender of the following communication has been awarded the Ws. prize this week. [1232] "S.C." (Scotstoun) writes :—" There have been, from time to time, letters on your `.......

Another Aluminium Solder.

[1233] " C. S." (Holloway) writes :—" I recently came across a way of making aluminium solder which is not very widely known, I think, amongst mechanics. It is advertised and......