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cas C] $ —in 1930: Dearie, the man says our All right, Sweetheart—but roof needs painting. not just now. Wait a little while. a $ in 19. Dearie, the man says our Sorry, Sweetheart—but we can’t roof needs painting. afford it this year. ia $ —im 1932: Dearie, the man says our I know, Sweetheart—but we roof needs painting. haven’t got the money this year. a $ —in 1933: Dearie, the man says our Wait ’til we get out of the red. roof needs painting. It’ ll last another season. —in 1934: What? ... The man says it isn’t worth painting—and that it’s too far gone for patching?. . .Well, we’ve got to have a roof over our heads. . . How much will a new roof cost? MORAL: You can’t put it off forever. THE PUSEY AND JONES CORPORATION Wilmington, Delaware Shipbuilders Since 1548 BETTER CASTINGS with Mayari PIC IRON, A CERTAIN CASTING had a top section, about 4 in. thick, which had to be machined. When an ordinary iron mix- ture was used a porous surface resulted, as shown at the left. The addition of a small percentage of Mayari to the cupola mixture eliminated this condition, and a casting was obtained with a smooth, dense surface, as shown at the right. This is a case where Mayari was used for its all-round improving effect. Cast- ings made with Mayari machine easily toa smooth, highly wear-resisting surface even on a thick section; they have a fine, close grain, and are free from blow-holes, spongy spots and other imperfections. There’s another highly important use for Mayari. It is a natural nickel- chromium alloy pig iron and offers a simple, economical method of making alloy-iron heat-resisting castings. In most cases it takes only a small percentage of Mayari to impart the de- sired properties. Engine and pump cylinders, piston rings and similar cast- ings can be made sounder and longer wearing, grate bars and other furnace parts can be made to stand the heat better, at very moderate cost, by using Mayari Pig Iron in the mixture. maa BETHLEHEM STEEL COMPANY, BETHLEHEM, PA. gETHLEHEY et ae District Offices: New York, Boston, Philadelphia, York, Wilkes-Barre, Baltimore, Washington, Atlanta, Pittsburgh, Buffalo, Cleveland, Cincinnati, Indianapolis, Detroit, Chicago, St. Paul, Milwaukee, St. Louis, Houston, Dallas. Pacific Coast Distributor: Pacific Coast Steel Corporation. San Francisco, Los Angeles, Portland, Seattle, Honolulu. Export Distributor: Bethlehem Steel Export Corporation, New York. MARINE REvIEw—August, 1934 41