Richardson's handbook of projection (1927)

Foreword LIKE the four editions which have gone before, this, the Fifth Edition has been compiled with the single idea uppermost of providing competent information upon, and instruction in motion picture projection and the various things directly allied thereto. The reason for making this edition in two vohimns is that we may be able to keep the work as up to date as possible with a minimum of cost to its purchasers. We have therefore so far as practicable placed in Volume I such matter as seldom or never changes. In Volumn II we have placed matter covering projection equipment, which is subject to more or less continual change. By this plan we believe the theatre manager and projectionist may have a complete text book on motion picture projection, acceptably up to date, by the occasional purchase of a second volume which will" be revised from time to time as equipment changes. In Volumn I of this Fifth Edition you will find much matter which is identical with matter in the fourth and third editions and even the second of the Handbooks. This is for the reason that it covers matters which are fundamental and do not change. The fundamental work having been accurately and painstakingly done in the first place, can not be improved by changing. As in previous editions there is in various parts of this edition a small amount of what might appear to be repetition. This is because it often seems advisable or necessary to treat of certain things in several different connections. It appears only where the author believes it essential to the best interests of the work as a whole. THE PUBLISHERS.