. The trackman's helper . tt. Willow Zinc, cast .. 23. ACCELERATION DUE TO GRAVITY. Berlin, lat. 52°3o ..... cm. Greenwich, 5i°29 . . ■ . Paris, 48*50 . . . •< New York, 40°43 . . • „ . 98019 Washington, 38° 54 . . . §34 THE TRACKMANS HELPER. Latof45° cm Equator, . . ■ „ . . Pole, 24. COEFFIENTS OF EXPANSION FOR 1 DEGREE BETWEEN ZERO AND 100 DEGREES C. Linear. Aluminium Antimony Bismuth Brass Bronze Copper Ebonite Glass Gold Gr

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. The trackman's helper . tt. Willow Zinc, cast .. 23. ACCELERATION DUE TO GRAVITY. Berlin, lat. 52°3o ..... cm. Greenwich, 5i°29 . . ■ . Paris, 48*50 . . . •< New York, 40°43 . . • „ . 98019 Washington, 38° 54 . . . §34 THE TRACKMANS HELPER. Latof45° cm Equator, . . ■ „ . . Pole, 24. COEFFIENTS OF EXPANSION FOR 1 DEGREE BETWEEN ZERO AND 100 DEGREES C. Linear. Aluminium Antimony Bismuth Brass Bronze Copper Ebonite Glass Gold Graphite Iron, cast Iron, Lead Marble Paraffine Pine Platinum Sandstone, Silver Sulphur Steel, tempered. .Steel, untmprd. Tin Zinc ,00002976 ADVERTISEMENTS. The Use Only the Latest QW TIE PLATE Over 30 Million Sold in 1899 «*. i MAXIMUM STRENGTHCOMBINES MAXIMUM LIFE ( MAXIMUM HOLDING POWER Made in Three Widths, 4^, 5 and 6 inches MANUFACTURED AND SOLD ONLY BY The Railroad Supply Go. The Q \ G Company BEDFORD BUILDING WESTERN UNION BLOG. CHICAGO uceNSEBs CHICAGO •. • - :.V; -,. :;

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1900