Patent for a machine used in the wet milling process. It allows proportionate distribution of liquids to aide during the thickening process.

A report containing tables of thermodynamic properties of ammonia.

Report discussing a demonstration was given within the last few days at the British Museum by Mr. J. W. Gordon, author of "Generalized Linear Perspective" (Constable and Co.), a work describing a newly-worked-out system by which photographs can be made available for the purpose of exactly recording the dimensions of the objects photographed even when the objects themselves are presented foreshortened in the photograph.

Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1922, activities, finance, organizational leadership, and other information about scouting programs.

Note presenting an investigation of the value of wood for structural parts subject to stress. An exploration of several different types of wood is provided, including the coefficeint of elongation in bending, tensile strength, compression strength, and energy required for fracture is provided.

Note presenting a study of the strength and deformation of the fabric used to cover airplane wings, both undoped and doped. The doping of the fabric with Cellon seems to have a predominant influence on the results according to the nature and number of the coats.

Describes methods of eliminating a rat infestation in terms of food sources, poisons, trapping, and rat proofing. Also describes the natural enemies and diseases of rats, and the benefits of community cooperation in their control.

Note presenting an investigation to determine if lighter sources of heat energy than gasoline exist. Various explosives are considered in terms of their calorific values.

Note giving an overview of five distinct methods shown for timing an airplane over a given distance and measuring the wind velocity, which provides the true speed of the airplane.

The author recounts his experiments with helicopters. The object of his investigations was to remain stationary in the air for five minutes and to make a closed flight at low altitude. Some of the topics discussed include stabilization, horizontal flight, and directional control.

A closer examination of Newton's formula for air resistance shows that it is well to consider the air as an ordinary fluid, and, indeed for most of the velocities considered, as a non-compressible fluid, so long as the dimensions of the moving body are large in comparison with the mean free path of the particles of air.

A formula for calculating the safety of airplanes is given and the stresses on airplane components are calculated. Some questions regarding the information obtained from the formula and its application to safe airplane design for pilots are provided.

Describes the characteristics of the striped cucumber beetle, the damage it can cause to plants, and methods for controlling it.

Wind-driven propellers are much used as sources of power for equipment such as radios. This report establishes the principles involved and acquaints the reader with rules for design of such windmills.

This report discusses the general considerations for the design of aerodynamic laboratories. The dimensions, construction, and components of the wind tunnel are given special attention.