What is a Disease
An Attempt to Formulate Definitions of the Fundamental Concepts of Medicine
Features
Reductions of Nitric Oxide by Contact Action of Metals and Metallic Oxides
An Improvement in the Open-Hearth Steel Making
A Guilty Basarisk
The use of Iron by Primitive Man
And the Sources from Which it was Obtained
Amateur Astronomical Photography
An Easily Constructed Camera for the Telescope
New Railway Lines Projected in Russia
Proposals for the Development of Transportation and Manufactures
Tunneling under a River
Difficulties Encountered in the Subway Work in New York
Photomicrography for the Amateur
The Ancient Capitals of Lanka
Wonderful Ruins in Ceylon that Antedate the Christian Era
How to Recognize Good Table Poultry
Cable Telegraphy
Washing Flannels
On the Correct Adjustment of Chemical Weights
To Secure Accuracy in Comparisons of Substances Under Investigation
How Waste Paper is used in Paper Mills
Paper Shortage Would be Reduced and Householders Make Pin Money by Paper Saving
Colored Photography
The Earth's Magnetism
The Discoveries of Halley's Expedition and Recent Investigations
