The New Dispensation or Development of Children by Environment, The Half-mad and more

A Novel Use of Cement in Sculpture

How the Statue to the American Indian Was Built

A Railway Car Driven by Gas and Electricity

A Substitute for Steam Trains Where the Traffic is Light

Oil-mixed Portland Cement Concrete, Detecting Icebergs and Land at Sea

Recent Improvements in Electric Vehicles

A Review of Important Patents Granted Within the Last Year

Making Models of the Magnetic Field

Fixing the Iron Filings With Plaster of Paris

A Simple Vehicle Jack

An Electric Harp

Lashing or Seizing Timbers Together

The Trade-mark as a Business Asset, How Legislators View Patents and more

Copyright, 1912, by Munn & Co.

VII.—Shall My Boy Become a Naval Architect?

Practising Efficiency and Knowing Costs, How Much Bread will a Given Quantity of Flour Make?

Abstract of a Letter to a New England Manufacturer