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This volume consists of teaching material originally produced by David Gregory, here transcribed with numerous drawings by Francis Pringle in Oxford in 1694-1695 and George Wood in St Andrews 1705. The volume's index is in Gregory's hand. The lectures, all by Gregory, are the Institutiones Astronomiae, the Oxford address on professional education he called De Ratione Studii Mathematici Consilium, the Lectiones Opticae, Trigonometria Planorum Angulorum, Geometria Practica, Geometriae de