POT] 



994 



[POT 



Fdtsch, J. S. 8. Lichenes Welwitschiani. 



Aufzahlung mehrerer von Dr. F. Welwitsch in 



OesterreichgesammeltenFlechten. Wien, Zool. 



Bot. Ver. Verhandl. XIIL, 1863 (^M.), pp. 581- 



584. 

 Potty G. A. Ueber die Beschaftigungen der 



Kaiserlich-Russischen mineralogischen Gesell- 



fchaft in St. Petersburg. Leonhard, Zeitschrift, 



1829, pp. 814-826. 

 Fotter, C. E. Notice of a rocking stone. Silli- 



man, Journ. XXIV., 1833, pp. 185-186. 



Potter, John. Description of a new method of 

 determining the weights of gases. [1827.] 

 Manchester, Phil. Soc. Mem. V., 1831, pp. 195- 

 200. 



Potter, Richard. An account of experiments 

 to determine the quantity of light reflected by 

 plane metallic specula under diiFerent angles of 

 incidence. Edinb. Journ. Sci. III., 1830, pp. 

 278-288 ; Poggend. Annal. XXII., 1831, pp. 

 606-611. 



■ 2. On various improvements in the casting, 

 working, &c. of the specula for reflecting tele- 

 scopes, with sundry hints to amateur opticians. 

 [1830.] Edinb. Journ. Sci. IV., 1831, pp. 13-27. 



3. An account of experiments to determine 



the reflective powers of crown, plate, and flint 

 glass, at different angles of incidence ; and an 

 investigation towards determining the law by 

 which the reflective power varies in transparent 

 bodies possessing the property of single refrac- 

 tion. Edinb. Journ. Sci. IV., 1831, pp. 53-67, 

 320-329. 



— — 4. Observations on the Meteor called the 

 Aurora Borealis, with calculations, trigono- 

 metrical and analytical, towards determining 

 the position and the course of the arches, with 

 respect to the surface of the earth. Edinb. 

 Journ. Sci. V., 1831, pp. 23-33. 



> 5. On the specific heats of some metals, 



with an exposition of some determinations by 

 MM. DuLONG and Petit ; and an examination, 

 as to the Metals, of the important law, that the 

 ultimate particles of simple bodies have all the 

 same capacity for caloric. Edinb. Journ. Sci. 

 v., 1831, pp. 75-83. 



•■ 6. On the general equations for determining 



the positions and curvatures of arches of Auroras 

 Boreales, from observations made in one place 

 only ; with calculations for that of the 25th 

 December 1830. Edinb. Journ. Sci. V., 1831, 

 pp. 209-219, 



— 7. On the modification of the interference 

 of two pencils of homogeneous light, produced 

 by causing them to pass through a prism of 

 glass ; and on the phenomena which then take 

 place, with reference to the velocity of light in 



■ its passage through refracting substances. Brit. 

 Assoc. Rep. 1831-32, pp. 553-554. 



Potter, Richard. 8. On an instrument for Pho- 

 tometry by comparison, and on some applica- 

 bility of it to optical phenomena. Brit. Assoc. 

 Rep. 1831-32, pp. 554-555; Phil. Mag. I., 

 1832, pp. 174-181. 



— — 9. A description of a new construction 

 of Sir Isaac Newton's Microscope. [1831.] 

 Edinb. Journ. Sci. VI., 1832, pp. 61-65. 



10. Remarks upon Mr. J. F. W. John- 

 ston's critique on the paper on Specific Heats. 

 [1831.] Edinb. Journ. Sci. VL, 1832, pp. 163- 

 166. 



11. On the specific heats of certain of the 



metals ; being a re-examination of the subject. 

 Edinb. Journ. Sci. VI., 1832, pp. 166-174. 



12. Instructions, mathematical and prac- 

 tical, on a method of polishing concave lenses 

 and specula, with certainty, to figures produced 

 by the revolutions of any of the conic sections 

 about their major axes. Edinb. Journ. Sci. 

 VL, 1832, pp. 228-239. 



13. Addendum to the paper (of the Rev. 



W. Cecil) on a method for giving the figures of 

 the conic sections to concave lenses and specula. 

 Phil. Mag. I., 1832, pp. 55-56. 



— 14. Experiments to determine the reflection 

 at the second surface of flint glass at incidences 

 at which no portion of the rays passes through 

 the surface. Phil. Mag. I., 1832, pp. 56-58. 



■^— 15. On the power of glass of antimony 

 to reflect light. Brit. Assoc. Rep. 1833, pp. 

 377-378 ; Phil. Mag. IV., 1834, pp. 6-9. 



— 16. On a phenomenon in the interference 

 of light hitherto undescribed. Brit. Assoc. 

 Rep. 1833, pp. 378-379. 



— 17. Communicationrespectinganarchof the 

 Aurora Borealis. Brit. Assoc. Rep. 1833, p. 401. 



— 18. On a new and simple Heliostat. Phil. 



Mag. II., 1833, pp. 6-8. 



— 19. On a particular modification of the 

 interference of homogeneous light. Phil. Mag. 

 IL, 1833, pp. 81-94. 



— 20. Observations on two arches of Auroras 

 Boreales. Phil. Mag. II., 1833, pp. 233-234. 



— 21. A reply to Professors Airy and 

 Hamilton on the paper upon the interference 

 of light after passing through a prism of glass. 

 Phil. Mag. II., 1833, pp. 276-281 ; Poggend. 

 Annal. XXIX., 1833, pp. 319-322. 



— 22. Particulars of a series of experiments 



on the velocity with which light traverses trans- 

 parent media. Phil. Mag. III., 1833, pp. 333-342. 



23. On a brilliant arch of an Aurora 



Borealis. Phil. Mag. III., 1833, pp. 422-426. 



— 24. De la forme des surfaces lumineuses 

 produites par reflexion sur un miroir spherique 

 qui a un point lumineux a I'un de ses foyers 

 approximatifs, et sur I'interference qui a lieu 

 pres des aretes de rebroussement de ces surfaces. 

 Quetelet, Corresp. Math. VIII., 1834, pp. 89-94. 



