CATALOGUE.' — PHTSICAL OPTICS. 



29 J 



Wall on the phosphorescence of diamonds. 



Ph.tr. 1708. 73. 

 Bourgues on a phosphorescent stone. A. P. 



1724. H. 58. 



By heat. 



Nollet on the Bolognan stone. A. P. 1743. 



H. 105. 

 On the Bolognan stone. C. Bon. I. 184. 

 *jBtfcc«rj de phosphoris. 4. Bologna, 1744. 



*Extr. by Watson. Ph. tr. 1746. 81. 



Found that tiie light was brightest when the surfaces were 

 rough : smooth ones retained no light. This does not look 

 like chemical attraction. 



Beccari Comm. Bonon. II. ii. 136. iii. 498. 



V. 106. 

 Beccaria on Canton's phosphorus. Ph. tr. 



1771.212. 



Emitting only the colour that it receives. 



IVihon and Beccari on phosphori. 4. Lond. 



1773. R. I. 

 Euler on Wilson's experiments. A. Petr. I. i. 



H.71. 

 Canton on a phosphorus. Ph. tr. 1768. 337. 

 Oyster shells burnt. 



Krafft on Canton's phosphorus. A. Petr. I. 



H. 77. 

 ♦Grosser on the light of the diamond. Roz. 



XX. 270. 



Even such phosphori, as emitted red light only, were 

 made to shine most by exposure to blue light. 



Morgan. Ph.tr. 1785. 



An oyster shell emitting green light will emit red light 

 when warmed. 



Morozzo on the appearance of the Bolognan 

 spar in gases. .Soc. Ital. III. 420. 



Marchetti on solar phosphori. C. Bon. VII. 

 O. 289. 



*T. Wedgwood on the production of light by 

 heat and by attrition. Ph. tr. 1792. 28. 



Almost all bodies when powdered emit heat at a tempe- 

 rature from 400° to 600° F. An account of the authors who 

 have treated on solar phosphori. 



Brugnatdli on the modifications of light. 



Extr. Ann. Ch. Xll. 188. XXVI. 107- 

 Ph. M. VII. 285. 

 On the phosphorescence of the diamond. 



Journ. Phys. LV. 60. 

 Accum on the light from borax. Nich. If. 



28. 

 Ph. M. III. 321. 



Carradori thinks putrescent wood a solar phosphorus. 



Dize on heat as ihe cause of shining. Journ. 

 Phys. XLIX. 177. Gilb. IV. 410. 



Huime's improvement on Canton's phospho- 

 rus. Ph. tr. 1801. 426. 



On the liglit of diamonds. Gilb. XII. 259. 



Light from friction, 

 Philonis belopoeica. 



Mentions the light produced by Ctesibius's air gun. 

 Nollet on the illumination of ice. A. P. 1766. 



H.2. 



See Electricity. 



Razumowsky on light from friction. M. 



Laus. II. 39. 

 *Giobert on the phosphorescence of vitriolat- 



cd tartar. Mem. Tur. 1788. IV. 73. Roz. 



XXXVI. 256. 



Under water ; not an electric phenomenon. 



T. Wedgwood on the production of light by 

 heal and by attrition. Ph. tr. I792. 28. 



Thinks that light from attrition is produced by a heat of 

 about 400° or 6oo° F., since almost all bodies emit some 

 light at this temperature. 



Severgyne'on the light of stones. N. A. Petr. 



1793. XI. 12. 

 Light from an air gun. Ph. M. XIV. S63. 

 Gilb. VIII. 366. 



Remer could find no ulectricity in the light of an air gun. 

 The gun must be highly laden, and, as some say, made of 

 iron. 



Light from electricity. See Electricity. 



Velocity of Light. 

 Romer on the motion of light. A. P. X. 3QQ. 

 Ph. tr. 1677. XII. 893. Journ. des savans. 



