2(>4 OPTICS. 



POTT (JEAN-HENRI). Dissertation sur la lumiere. See Pott (J. H.). 

 Lithogeognosie, ou examen chymique des pierres. 12 1753. (Che- 

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POUGET ( ). See Anonymous. Observations sur l'arc-en-ciel. 8 1788. 



POWELL (BADEN). A short elementary treatise of experimental and 

 mathematical optics ; for the use of students. 8 Oxford, 1833. 



PRIESTLEY (JOSEPH). The history and present state of discoveries 

 relating to vision, light and colours. 4 London, 1772. 



PRINGLE (Sir JOHN). A discourse on the invention and improvements 

 of the reflecting telescope, delivered at the anniversary meeting of the 

 Royal Society, Nov. 30, 1777. 4 London, 1778. 



PRITCHARD (ANDREW). Description of optical instruments. See 

 Anonymous. Natural philosophy; vol. n. 8 1832. (Natural philosophy, 

 General works on.) ( Two copies.) 



. See Goring (C. E.) and Pritchard (A.). Microscopic illustrations, 



&c. 8 1830. 



. The microscopic cabinet of select animated objects ; to which are 

 subjoined memoirs on the verification of microscopic phenomena, and 

 the exact method of appreciating the quality of microscopes and engi- 

 scopes, by C. R. Goring. 8 London, 1832. 



PUGH (S.). Observations sur la lumiere. See Pugh (S.). Obser- 

 vations sur le calorique, &c. 8 1826. (Chemistry.) 



Q. 



QUETELET (A.). See Herschel (Sir J. F. W.). Traite de la lumiere. 

 8 1829, &c. 



. Memoire sur une nouvelle maniere de considerer les caustiques, 



produites, soit par reflexion, soit par refraction. 4? [Bruxelles, 1825-3 

 From the Memoires of the Academy of Bruxelles, torn. 3. 



. Resume d'une nouvelle theorie des caustiques, suivi de diflferentes 



applications a la theorie des projections stereographiques. 4 [Brux- 

 elles.l 



R. 



RAMUS (PETRUS). Opticse lib. iv. See Risner (R). Optica?, &c. 4 

 1606. 



REDI (FRANCESCO). Lettera intorno all' invenzione degli occhiali scritta 

 al S r P. Falconieri. 4 Firenze, 1678. 



RHODIUS (AMBROSIUS). Optica ; cui additus est tractatus de crepus- 

 culis ; 2 pts. in 1 vol. 12 Witebergice, 1611. 



RISNER (FRIDERICUS). Opticae libri quatuor ex voto P. Rami olim 

 conscripti, nunc in lucem producti. 4 Cassellis, 1606. 



RIZZETTIUS (JOHANNES). De luminis afFectionibus specimen physico- 

 mathematicum. 8 Tarvisii, 1727. 



ROCHON (ALEXIS-MARIE). An essay on the degree of warmth of co- 

 loured rays. See Evans (T. S.). Historical memoranda, c. 8 1815. 

 ( Chemistry.) 



RONALDS (FRANCIS.) Mechanical perspective ; or description and uses 

 of an instrument for sketching from nature every kind of object ; and 

 of a machine for drawing in perspective. 8 London, 1 828. 



ROUCHER-DERATTE (CLAUDE). Traite sur la luminologie, ou sur la 

 lumiere relativement a ses diverges branches. 8 Montpellier, 1809. 



ROUX (JACOB). Die Farben ; vol. in. 8 Heidelberg, 1829. 



