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SA Supplements Vol 11 Issue 284supp

SA Supplements

Volume 11, Issue 284supp

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Features

Todt's Hot-Air Engine

The Cunard Steamship Servia

Apparatus for Squaring and Measuring the Lengths of the Axle-Cranks of Locomotives

Cranston's Deep Rock Boring Machine

The Sewerage of Memphis

Frederick S. Odell

Coal Per Horse-Power per Hour

Co-Operative Heating and Lighting

Optical Telegraphy

On the Modern Development of Faraday's Conception of Electricity

Helmholtz

The Grange, Little Tew, Oxon

On the Origin of Gold Nuggets and the Formation of Placer Deposits

Chilling Properties of Iron

Spontaneous Ignition of Vegetable Stances by Nitric Acid

A Refraction Photometer

Persistence of Vision

Prizes of the Paris Academy of Sciences

Photo-Micrography

George E. Davis

Rapid Photo-Lithography

On the Loss of Nitrous Compounds in the Manufacture of Sulphuric Acid, and on a Method for their Abatement

MM. Lasne, Benker

Negative Paper Process

Oil of Almonds

Polytechnic Association of the American Institute

On the Influence of the Molecular Grouping in Organic Bodies on their Absorption in the Infra-Red Region of the Spectrum

W. De W. Abney

Flavescln

Constipation and its Effects

E. S. F. Arnold

Artificially Colored Rose Leaves

Lorenzen's Ammonia Apparatus

Coca Cultivation

New Sheaf-Binder

The Quality of American Hogs and Hog Products

Cheap Ornamental Gardening

“Mhowa” or “ Mahwah,” an Indian Food Tree

C. G. Warnford Lock

Faye's Comet

Action of Frost on Evergreen Plants

Seaside Zoölogy

The Inconceivable as a Test of Truth

F. H. Nash

An Extraordinary Dwarf

The Production of Double Flowers

A New Vine Pest which is also Fatal to Phylloxera — Immunity of American Vines

Patents