Design and Construction of a High-grade Motor Car, the "Model Y," 40 horsepower, six-cylinder machine, with 36-inch wheels, built by the Stevens-Duryea Company in 1910. AUTOMOBILE MANUFACTURING METHODS - The subserviency of manufacturing considerations to considerations of strength, durability, accessibility, etc., results in the design of parts which require special and interesting provisions for their economical production. MANUFACTURING AUTOMOBILE EQUALIZING GEARS - The operations for making a complete, compact machine unit - a differential or equalizing gear for automobile use, is described from beginning to end.