The Art of Preserving the Eye-Sight

Some Recent Additions to the Botanical Materia Medica

Koumiss; its Mode of Preparation and its Remedial Value

Opium vs. Coffee

M. Richet says, in a popular article, in the Revue des Deux Mondes :

Hemiplegia from Cerebral Hemorrhage

On the Physiological and Therapeutical Properties of Glycerine

Lines on the Surface of the Nails

Pill Coating

Floors

Tin Plate

A Reed, and how it is Made

On a New Method for the Separation and Subsequent Treatment of Precipitates in Chemical Analysis.*

Fermentation

New Form of Apparatus for Fractional Distillation Under Diminished Pressure

Improved Forty-Horse Power Engine

Heat in the Deep Gold Mines

Engineers' Club of Philadelphia

Floats for Docking Ships and Raising Sunken Vessels

American Essential Oils

A Novel Brick Kiln

Not a Gambling Game

Solutions to Problems

Danbury News Tourney

The Onondaga Problem Tournament

Sans Voir

W. Grimshaw, of England