Discusses for the novice why boats float, hull shapes, wind, sails, and keels; gives directions for building a model boat and a glossary of nautical terms. Includes specific instructions for building an eight foot leeboard scow with hand tools, and explains how to handle it.
An introduction to photography describing the parts of a camera, the use of light and composition to achieve various effects, and the developing of film.
An introduction to six simple machines--the lever, the inclined plane, the screw, the wheel and axle, the wedge, and the pulley--and their use in more complex machines such as derricks, bulldozers, and metal lathes.
