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Features

Preservation of Building Materials by the Application of a Paraffine Wax Compound, as Recently used upon the Egyptian Obelisk, Central Park, N. Y.

By R. M. Caffall

Correspondence through Pigeons

How Solid Cast iron Floats on Melted Iron

Mechanical Water Cooler

Hydrocarbon Furnaces for Dental Operations

By C. H. Land

Report of the Committee on a Uniform System for Tests of Cement

[Presented at the Annual Meeting, January 21, 1885]

The Cochineal Industry in Guatemala

The Manufacture of Toilet Soaps

By C. R. Alder Wright

Calorific Power of Fuel

By Joji Sakurai

Hollow Bonds

The Equilateral Arch

The Determination of Phosphoric Acid in Commercial Fertilizers

By John S. Adriance

Longleat.—An English Country Residence

The Best Kind of Drummer

The New National Museum at Amsterdam

Evans' Combination Implement

Supplementary Rudder for use on the Suez Canal

Coal-Boring Machines

Sibley College Lectures.—No. 2

By the Cornell University Non-Resident Lecturers in Mechanical Engineering

By J. C. Hoadley

Repairing Broken Crank-Shafts

The Wenham Light

The Influence of Magnetism upon the Character of the Spectral Lines

By Ch. Fievez

Cocoa-Nut Fiber

The Japanese Persimmon

Two Games

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January 30, 1886

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