The following Paper was read before the Institute of British Carriage Manufacturers, and is published at the suggestion of several members of the craft. Having to be communicated in a limited time it was unavoidably brief in some respects, but the publication presents an opportunity for correcting the deficiency. It has therefore been somewhat amplified, the additional chapters on the "Cant-board," "Projection," and "Perspective," which are added having been prepared for the "Newcastle Technical Class in Carriage-Building." As the greater portion of the revised form has been submitted to and is approved by Mr. G. N. Hoofer, President of the Institute, and Mr. G. A. Thrupp, the official examiner of the City and Guilds of London Institute, and past Master of the Worshipful Company of Coachmakers, I am induced to believe that a perusal may prove of some service to the apprentice who is anxiously aiming at proficiency.