cientific Paper in the World. — Ar elaborate paper onthe present status of the work on this important engineering enterprise, with a descrip- ase tion of the proposed provisional lock canal, witb 9 illus- "20, Only $3.00 a Year, including Postage. Weekly. trations. Contained in SCIENTIFIC AMERICAN… … Best Cast Steel. Hardened, MUNIN & CoO. Ground, and Burnished, from \, 3-16 in. to 2in. diameter. 361 Broadway, New York. _ In quality and density of metal, in uniformity of temper, and in ac- THe E y] curacy and nicety of finish warrant- Scientific American Supplement. yy? ed unequaled. Hee…
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