A Revised Account of the Experiments Made With the Bashforth Chronograph to Find the Resistance of Air to the Motion of Projectiles

Cambridge [UK]: Univ. Press, 1890. First Edition. Original publisher's cloth.. Good; some rubbing to the cloth.. 8vo, xii, [1] - 317, [1 - printer's slug], [2 - adverts] pp.

This "revised" account is in fact a new work extending the efforts of his initial experiments on air resistance prior to 1880. Those experiments were limited to lower velocities and specific projectile shapes. The effort here is to establish a universal equation to determine resistance and hence flight characteristics for hyper-sonic projectiles of all kinds. It took Bashforth years to complete his analysis and establish reliable range tables - the simple end of some very complex calculations. An important book (the introduction to the text is a summary of the complexity of the problem).