EXTRA HEAVY AND IMPROVED PATTERNS.

LATHES, PLANERS, DRILLS, of all sizes; Vertical Boring Mills, ten

feet swing, and under; Milling Machines, Gear and Bolt Cutters; Hand

Punches and Shears for Iron.

Office and Warerooms, 98 Liberty st., New York; Works at Worcester,

Mass.

A. C. STEBBINS, New York, Agent.

* * * * *

WATER-PROOF

_BUILDING PAPER_

(No Tar), for Roofing, Sheathing, Ceilings, Oil-cloths, Shoe

Stiffenings, Tags, Trunks, Cartridges, Blasting, Pass-book Covers,

Grain and Flour Bins, etc., for sale by

J. HUNTER, JR.,

Paper Warehouse, 59 Duane st., New York.

* * * * *

Scientific American, Volume XXIV., No. 12, March 18, 1871 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. · 第 188 / 194 题