Diam. Circ. Area. Diam. Circ. Area. Diam. Circ. Area. THIS TABLE IS TAKEN FROM For the Ramapo Wheel and Foundry Co. "Hamilton's Useful Information for Railway Men," 250.5 4995.184 250.9 5010.8 251.3 5026.5844 251.7 5042.2 252.1 5058.084 252.5 5073.7 252.8 5089.5843 253.25105 4 253.6 5121.285 254. 5137.I 254.4 5153.085 254.8 5168.9 255.2 5184.885 255.6 5200.8 256. 5216.8 854 256.4 5232.8 256.8 5248.8||36 257.2 5264.9 257.6 5281.0 S6 258. 5297.I 258.3 5313.2 361 258.7 5329.4 259.1 5345.6 86 | | 259.5 5361.8 259.9 5378.087 260.3 5394.3 260.7 5410.6 87 261.1 5426.9 274.1 5978.9 274.4 5996.0 79 248.1 4901.6834 261.5 5443.2 87 274.8 6013.2 247.4 4870.7 83 247.7 4886.1 McNairy & Claflen Manufacturing Co.............Cleveland, Ohio......................................... See Page 42 Submarine Telegraph Cables. Bishop Gutta Percha Works.......................... New York...... เ ...See Page 34 THIS TABLE IS TAKEN FROM "Hamilton's Useful Information for Railway Men,” For the Ramapo CIRCUMFERENCES AND AREAS OF CIRCLES-Continued. Diam. Circ. Area. Diam. Circ. Area. Diam. Circ. Area. Highest Premium Awarded by the American Institute Fair, 1871. WASTE NO TIME, OIL OR LABOR ON WORTHLESS PAINTS. USE PRINCE'S METALLIC PAINT, Acknowledged throughout the United States to be the best fireproof, indestructible, and the cheapest to the consumer; one-third less oil and paint covers a greater surface than any other so-called Metallic Paint, Spanish Brown or Red Lead. A package containing 25 lbs. paint in oil, or 50 lbs. dry, will be sent to any Railroad Company free of charge, on application to us. Send for a circular containing testimonials from the principal Railroad Companics, Manufacturers, and others in the country. For sale by the trade generally, and PRINCE'S METALLIC PAINT CO., 96 CEDAR STREET, NEW YORK. All Packages are marked with name and trade-mark._# Subterranean Telegraph Wires. Bishop Gutta Percha Works................................ ..New York......................See Page 34 Charles T. Chester....... F. Eckel..... Kuebler & Seelhorst... Wm. J. Young & Son....... Surveying Instruments. 66 212 New York........ .See Page 76 Romer & Co., Patentees and Manufacturers.....Newark, N. J...................... .New York.........See next page to back. ..........New York........ ..... Switch Locks. 114 ..See Page 204 Syphons. Leng & Ogden. Tacks, Brads, &c. and Foundry Co. Published by D. VAN NOSTRAND, “Hamilton's Useful Information for Railway Men,” For the Ramapo Wheel No. Square. Cube, Square Cube Root. Root. No. Square.! Cube. Square Cube Root. Root. 1 2 3 4 5 Ι I 1.0 1.0 31 961 2 4 8 9 27 4 16 25 64 125 1.414 1.259 32 1024 1.732 1.442 33 1089 2.0 1.587 34 1156 2.2301.709 35 1225 |