Two Important Books Reviewed: Engine Design for Students and a Reference Book on Synthetic Rubbers

This notable book gives pleasure from the outset owing to the high standard of its printing and binding, now all too rarely met with these days, and owing to the obvious excellence of its layout. These first impressions are fully borne out by a closer perusal, but only when the author's purpose is kept firmly in mind. For lest its title should rouse false hopes in the breasts of practising designers, leading them to think that here at last is the book for which they have been waiting, it would be as well to refer at once to the author's opening words. Writing from Purdue University, Indiana, he says: “This text has been assembled to aid technical students in bridging the gap between the point (a) where they have a fairly complete knowledge of the fundamentals of mathematics, mechanics, and machine design and (b) the point where they are sufficiently familiar with the application of these fundamentals to the design of aircraft engines to enable them to be of value to the aircraft‐engine building industry.”