Uylenbroek, Pieter Joannes, editor. 1772-18),. **E 25021.44 Huygens, Christiaan, 1629-1695, and others. Exercitationes mathematicde et philosophicde, edidit Petrus Joannes Uylenbroek. Hagae Comitum, ex typ. regia. 1833. 2 fasc. in lv. 5 pl. he, Contents. <1. Hugenii, Leibnitii et Hospitalii epistolae mutuae. 2. Vaumeslii, Duilierii et Hub. Huighenii epistolae.