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Scientific American, Vol. 80, No. 17 (1899) (1899)

leaf 9

An illustration from Scientific American, Vol. 80, No. 17 (1899), 1899, leaf 9
dult the inside by having a stream of cold oil run through female is somewhat smaller, having not one-half the rocating movement in the direction of the grain. it. The furnace is gas fired, and great care has to be After polishing, the barrels are given a seventh and bulk of the male. taken that… … THE CALIFORNIAN SEA LION. friction of polishing may have heated and slightly many cases by the Californian sea lion. Captain Scam- the tempering is to give special hardness and resisting mon, writing of his experiences with these animals on qualities to that part of the barrel which takes the…

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