Perigal (Henry) Contributions to Kinematics. Bicircloids, 6 double-page plates of numerous diagrams, all mounted on linen, one loose, some spotting and soiling, ex-library copy with presentation label from the author and stamps to plates (embossed to recto, ink to verso), contemporary cloth, rubbed and stained, [1854] § Hatton (Richard G.) Design: An Exposition of he Principles and Practice of the Making of Patterns, 1902 § Schauermann (F.L.) Theory and Analysis of Ornament..., 1892 § Fenn (Abor) Abstract Design: A Practical Manual..., 1930 § Garin (Paul A.) Outlines of Industrial Drawing, third edition, Oakland, Ca., 1888 § Bowers (R.S.) Drawing and Design for Craftsmen, second edition, 1919 § Petty (J.) The "A.L." Freehand Photo Copies for Freehand Drawing of Ornament in Outline, original printed wrappers, ink signature to head of upper cover, foxed, Leeds, E.J.Arnold & Sons., [c.1900], most first editions, all rubbed; and c.20 others on patterns, design, and technical drawing including an illustrated manuscript volume of 'Papers in Surveying' by A.F.Elder of Dartmouth College NH c.1872, v.s. (c.25)

⁂ The plates in the first depict geometrical drawings illustrating the system of curvilinear motion. Henry Perigal was an amateur mathematician known for his dissection-based proof of the Pythagorean theorem and unorthodox views regarding the rotation of the moon. An accomplished lathe turner, he used a geometric chuck, the most sophisticated piece of machinery available to ornamental turners, to create complex curves, and was the first to classify the results mathematically, also constructing mathematical models for Augustus de Morgan.