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Features

The Structure of the Skeleton in Invertebrate Animals

Some Description of the Simplest Elements Constituting the Morphological Unit

By Lucien Cayeux

Steam Turbine Development

Tendencies of Progress and Future Possibilities

Maintaining Ocean Telegraph Cables

And their Survival in Competition with Wireless Systems

Storing Heat

Aviation and the War

Commanding Officer, British Aviation Mission

By C. F. Lee

Definition of Valency

A Discussion of an Important Principle of Chemistry

By F. H. Loring

On the Phenomena of Fluorescence

By Desmond Geoghegan

Relative Efficiency of Motor-Fuels

Holland Seeks a New Province

Plans for Reclaiming Great Areas from the Zuider Zee

By H. Merian Allen

Oxygen in Iron

The Functions of the “Sacral Brain” in Dinosaurs

How did These Immense Animals Maintain their Size?

By Richard Swann Lull

Black Dyeing on Iron Mordant

The Wax Palm and its Uses

By C. D. Mell

Full-Sized Ship Experiments

A Surface Having only a Single Side

An Investigation of a Curious Geometrical Problem

By Carl Hering

The Examination of Organic Developing Agents

Methods for Identifying Them and Distinguishing their Qualities

By H. T. Clarke

The Preparation of Xylose from Corn Cobs

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    December 21, 1918

    Think Outside the Gift Box