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SA Supplements Vol 26 Issue 669supp

SA Supplements

Volume 26, Issue 669supp

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Features

The Graphophone and Phonograph

Reducing the Density of Negatives by Various Agents

Charles Ehrmann

Electric Lighting in America

George Forbes

Covered Reservoirs

Ancient Covered Reservoirs

Chas. H. Swan

On Variable Load, Internal Friction, and Engine Speed and Work

Robert H. Thurston

The Relative Merits of the Various Types of Steam Boilers

The Great Lakes

Nature's Barometers

The History of a Scientific Doctrine

S. P. Langley

Filtration with Filters of Metallic Felt

Charles E. Munroe

The Geiser-Thingvalla Collision

On Tortoise (Chrysemys Picta) with Two Heads

E. H. Barbour

Some Experiences with Birds

Statue of Buddha

How Plants are Fertilized

A Botanical Atrocity

Miller Christy

Useful Engineering Books

Building Plans and Specifications

High Meteorological Stations

Departments

Patents - October 27, 1888