297 B'way, New York. Address letters to P. O. Box 2773.

* * * * *

FOR UNIVERSAL LATHE DOGS, DIE DOGS, ETC.,

send for circular to C. W. LE COUNT, S. Norwalk, Ct.

* * * * *

ICE-HOUSE AND COLD ROOM.--BY R. G.

Hatfield. With directions for construction. Four engravings.

SUPPLEMENT NO. 59. Price, 10 cents.

* * * * *

Scientific American, Volume 40, No. 13, March 29, 1879 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 88 / 162 题