the works of Messrs. Mr. David Spence, in American Machinist, says: ferred lard for this purpose. Sufficient rolling having Denny & Co., engineers and boiler makers, Dumbar- During the past winter I have used aluminum in been given to the surface of swelled gelatine, a sheet of ton. The machinesays… … lengths, connected togeth- are a benefit. WORK. er by Adamson flanged I want other foundrymen to know it. I believe we joints, the elasticity of are making rapid progress in American foundry prac- which allows free expansion of the flue longitudinally, in an ordinary letter copying press. Mr. L.…
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