3060 Magic Mirrors 



concave. Christiansen, C. A. Ps. C. 141 



(1870) 470-. 

 , construction of large. A***. [1813] (vi 



Adds.) Gergonne A. Mth. 4 (1813-14) 180-. 

 , foci in system of 2. Cassani, P. Spet. It. 



Mm. 6 (1877) (App.) 24-. 

 , image in. Bolze, H. Pogg. A. 117 (1862) 



348-. 

 , for microscopes. Ewell, N. D. Am. Mcr. 



S. P. 14 (1892) 43. 



conical. Pifre, A. C. B. 91 (1880) 388-. 

 (Pifre). Mouchot, A. C. B. 92 (1881) 



1285-. 

 , anamorphoses. Emsmann, H. Pogg. A. 



77 (1849) 571- ; 85 (1852) 99-. 

 , transformation of plane lines by reflection 



at. Terrier, L. [1874] Neuch. S. Sc. fill. 



10 (1876) (App.) 3 pp. 

 convex, and diverging lenses, new method of 



determining focus. Monoyer, F. (xn) 



Strasb. S. Sc. fill. 1 (1868) 25-. 

 , focal length determination. Budden, E. 



Nt. 52 (1895) 366. 

 curved. Almeida, C. A. M. de. [1877-78] 



Lisb. J. Sc. Mth. 6 (1878) 130-, 165-. 

 cylindrical, reflection of light. Sluginov, N. P. 



Bs. Ps.-C. S. J. 16 (Ps.) (1884) 175- ; Fschr. 



Ps. (1884) (Ab. 2) 42. 

 elliptic quadrant, focal line for rays from 



centre. Lehmus, . [1847] Crelle J. 44 



(1852) 90-. 

 for galvanometers, simple method of making. 



Thwing, C. B. Nt. 58 (1898) 571. 

 gauge. Becker, J. Franklin I. J. 137 (1894) 



42-. 

 gilding of glass for. Wernicke, W. [1867] A. 



Ps. C. 133 (1868) 183-. 

 glass, error when surfaces are not parallel. 



Lemoch, I. Grunert Arch. 25 (1855) 163-. 

 , method of grinding. Thomson, E. Franklin 



I. J. 76 (1878) 117-. 

 , secondary images, theory. Fischer, E. G. 



[1812] (nAdds.) Berl. Ab. (1812-13) (Mth.) 



45-. 

 light condenser, elliptical reflector. Henry, 



L. d'. Les Mondes 13 (1867) 507- . 

 locus of points lying on concentric reflecting 



shells whence rays from fixed point are re- 

 flected through another fixed point. Werner, 



W. Arch. Mth. Ps. 66 (1881) 56-. 



MAGIC MIRRORS. 



Benin, A. [1880] A. C. 22 (1881) 472-. 

 Chinese. Brewster, (Sir) D. Ph. Mg. 1 (1832) 



438. 



. Person, C. C. C. B. 24 (1847) 1110-. 

 . Govi, G. [1864-67] Tor. Lav. Sc. Fis. 



Mt. (1869) 67- ; Tor. At. Ac. Sc. 2 (1866-67) 



357- 

 and Japanese. Berson, . Toul. Ac. Sc. 



Mm. 2 (1890) 428-. 

 Japanese. Prinsep, J. Beng. J. As. S. 1 



(1832) 242-. 



. Atkinson, E. W. Nt. 16 (1877) 62. 

 . Perry, J., & Ayrtm, W. E. [1878] B. 



S. P. 28 (1879) 127-. 



Mirrors 3060 



Japanese. Ayrton, W. E. [1879] B. I. P. 9 



(1882) 25-. 

 . Muraoka, H. A. Ps. C. 22 (1884) 246- ; 



25 (1885) 138-. 



. Blasius, E. A. Ps. C. 27 (1886) 142-. 

 . Piers, H. [1888] N. Scotia I. Sc. P. & 



T. 7 (1890) 118-. 



. Walden, P. Biga Cor.-Bl. 41 (1898) 50. 

 manufacture. Maillard. L. C. B. 37 (1853) 



178-. 

 . Bertin, A., & Duboscq, J. A. C. 20 (1880) 



143-. 

 . Kearton, J. W. L. Ps. S. P. 13 (1895) 



32-; Ph. Mg. 37 (1894) 546-. 

 metal plates, deformation by grinding. Muraoka, 



H. A. Ps. C. 29 (1886) 471-. 

 in silvered glass. Laurent, L. C. B. 92 (1881) 



412-, 712-, 874-; Par. S. Ps. Se. (1881) 



131- ; (1884) 73-. 



metal. Berghaus, A. Cztg. Opt. 12 (1891) 



195-. 

 , polishing. Schroeder, H. Cztg. Opt. 18 



(1897) 142-, 151-. 

 , preparation. Quincke, G. A. Ps. C. 129 



(1866) 44-. 

 , reflection from. Fischer, E. G. Berl. Ab. 



(1814-15) (Mth.) 1-. 

 new metal for. Mach, L., <& Schumann, V. 



Wien Ak. Sb. 108 (1899) (Ab. 2a) 135-. 

 and optical illusions. Lucas, F. Les Mondes 



16 (1868) 59-. 

 parabolic. Crockett, C. W. Asps. J. 7 (1898) 



362. 

 , best form. Latchinoff, D. Lum. Elect. 



4 (1881) 151-. 

 , fluid. Perkins, G. R. Camb. (M.) Mth. 



M. 1 (1859) 79-. 



, Foucault's method of autocollimation ap- 

 plied to. Martin, A. C. B. 70 (1870) 446-. 

 , testing. Martin, A. C. B. 70 



(1870) 389-. 

 , large, construction. Krecke, F. W. C. 



Brux. Ac. Bll. 18 (1851) 363-. 

 , preparation by centrifugal force, Latchinoff 's 



method. Guerout,A. Lum. Elect. 4 (*1881) 



70-. 

 and spherical, reflection from. Beeck- 



Calkoen, J. F. van. Amst. Vh. 1 (1812) 1-. 

 , test for use in making. Heise, C. G. Cztg. 



Opt. 16 (1895) 49. 

 photo-thermic armillary collector, Bales- 



trieri's. Michel, R. F. Les Mondes 39 



(1876) 530-. 

 plane. Longinescu, G. G. [Bucarest S. Sc. 



Bl. 3 (1894)] 97, 271 ; 4 (1895) 77-. 

 , figures in. SveSnikov, P. I. Kazan S. 



Nt. (Ps.-Mth.) P. 6 (1888) 8-. 

 , glass, multiple images. Gergonne, J. D. 



Nancy Tr. S. Sc. (1811-12) 7-; Gergonne 



A. Mth. 5 (1814-15) 283-. 

 , , . Stratingh, S. E. A. Ps. C. 122 



(1864) 462-. 

 , , . Bermann, 0. A. Ps. C. 127 



(1866) 450-. 

 , 2 inclined. Mack, L. Arch. Mth. Ps. 2 



(1885) 1-. 



304 



