Abetti] 



15 



[Abney 



1900 in Arcetri all' equatoriale di AMICI. [1900.] Astr. 

 Nachr., 154, 1901, 157-160. 



1O9. II numero assoluto dell' era volgare nel periodo 

 Giuliano. [1900.] Spettrosc. Ital. Mem., 29, 1901, 

 14-15; Observatory, London, 23, 1900, 315-317. 

 Abich, [Otto Wilhelm] Hermann von. Assign to this 

 author entries (Vol. 1) under Abich, G. 



For biography and works see Amer. Jl. Sci., 32, 1886, 

 246; Foldt. Kozlon., 16, 1886, 338; Leopoldina, 22,1886, 

 168 ; Nature, 34, 1886, 245, 290 ; Paris, Ac. Sci. C. R., 

 103, 1886, 14-17; St. Petersb., Ac. Sci. Mem. (Russ.), 

 53, 1886, 5-8 ; St. Petersb., Com. Geol. Bull., 5, 1886, 

 8 pp. ; Wien, Nat. Hist. Hofmus. Ann., 1, 1886 (Not.), 

 15-16; Geol. Soc. Quart. JL, 43, 1887 (Proc.), 49; 

 Termt. Kozlon., 19, 1887, 500; Wien, Almanach, 37, 

 1887, 192-194; Geogr. Jbuch., 12, 1888, 350. 



85. * Mittheilung iiber die Bruunenbohrung von 

 Kudako. Deutsch. Natf. Tagebl., 1872, 134-135. 



86. *Ueber den Ararat. Deutsch. Natf. Tagebl., 

 1872, 135. 



87. *Zur Orographie Kaukasiens. [Tr.] [1879.] 

 Ztschr. Wiss. Geogr., 1, 1880, 68-75. 



Abney, (Capt. Sir) William de W[iveleslic]. 4O. * Photo- 

 graphic spectra showing the Sun's rotation. [1877.] 

 Observatory, London, 1, 1878, 134-135. 



41. *Ascertaining the height of clouds. [1880.] 

 Meteorol. Off. Met. Council Rep., 1878-79, 25-26. 



42. * Preliminary report on the photo-nephograph. 

 [1882.] Meteorol. Off. Met. Council Rep., [1880-81], 

 33-34. 



43. The effect of shearing stress on a sensitive salt. 

 Photogr. Jl., 8, 1884, 80-81. 



44. Illumination of the dark room, and some optical 

 experiments. [With discussion.'} Photogr. Jl., 8, 1884, 

 88-94, 110. 



45. The Siemens unit lamp for photographers. 

 [With discussion.] [1884.] Photogr. Jl., 9, 1885, 26-28. 



46. Testing gelatine. [With discussion.] [1884.] 

 Photogr. Jl., 9, 1885, 42-45. 



47. The photographic image. [With discussion.] 

 Photogr. Jl., 9, 1885, 128-134. 



48. The production of monochromatic light, or a 

 mixture of colours, on the screen. [1885.] London 

 Phys. Soc. Proc., 7, 1886, 181-185; Phil. Mag., 20, 

 1885, 172-174. 



49. Different kinds of water in the developer. [1885.] 

 Photogr. Jl., 10, 1886, 59-60. 



50. On the measurement of the coloured light for 

 dark rooms. [With discussion.] Photogr. Jl. , 10, 1886, 

 114-122, 138-142. 



51. Comparative effects of different parts of the 

 spectrum on silver salts. Roy. Soc. Proc., 40, 1886, 

 251-254. 



52. The solar spectrum, from X 7150 to X 10,000. 

 [1885.] Phil. Trans., 177, 1887, 457-469. 



53. On the atmospheric transmission of visual and 

 photographically active light. Astr. Soc. Month. Not., 

 47, 1887, 260-265. 



54. On measuring densities of photographic deposit, 

 with some remarks on sensitometers. [With discussion.] 

 Photogr. Jl., 11, 1887, 38-46. 



55. Transmission of sunlight through the Earth's 

 atmosphere. [1887-92.] Phil. Trans. (A), 178, 1888, 

 251-283 ; 184, 1894, 1-42. 



56. Theoretical aspect of ortho-chromatic photo- 

 graphy. Photogr. Jl., 12, 1888, 105-106. 



57. On platinotype deposits. [With discussion.] 

 Photogr. JL, 12, 1888, 165-170. 



58. Sunlight colours. [1887.] Roy. Inst. Proc., 12, 

 1889, 61-71. 



59. On the measurement of the sensitiveness of 

 silver salts to the spectrum. [With discussion.] [1888.] 

 Photogr. JL, 13, 1889, 2-17, 26-29. 



60. On the value of a scale of density on a photo- 

 graph. Astr. Soc. Month. Not., 49, 1889, 285-292. 



61. Presidential address to the Math, and Phys. 

 Sci. Sect., Sept. 12th. The theory of photography. 

 Brit. Ass. Rep., 1889, 481-488. 



62. On the quantity of deposit of silver produced by 

 the development on a photographic plate in terms of the 

 intensity of light acting. Brit. Ass. Rep., 1889, 493. 



63. Total eclipse of the Sun observed at Caroline 

 Island, on 6th May, 1883. [1887-88.] Phil. Trans. (A), 

 180, 1890, 119-135. 



64. On the measurement of the luminosity and 

 intensity of light reflected from coloured surfaces. 

 [1888.] London Phys. Soc. Proc., 10, 1890, 30-37; 

 Phil. Mag., 27, 1889, 62-69. 



65. On the density of intensified negatives. [With 

 discussion.] [1889.] Photogr. JL, 14, 1890, 2-6. 



66. Note on the scaling of Dr. SPITTA'S wedge by 

 means of photography. Astr. Soc. Month. Not., 50, 



1890, 515-517. 



67. On the accuracy of the grease-spot photometer 

 for measuring the density of photographic plates, and 

 a note on the sector photometer. Soc. Chem. Ind. 

 JL, 9, 1890, 722-725. 



68. Colour-photometry. Chem. Soc. Proc., 7, 1891, 

 150-154. 



69. On an undiscussed point in the illumination of 

 the dark room. [With discussion.] Photogr. JL, 15, 



1891, 164-167. 



70. The numerical registration of colour. Pre- 

 liminary note. Roy. Soc. Proc., 49, 1891, 227-233. 



71. On the examination for colour of cases of 

 tobacco scotoma, and of abnormal colour blindness. 

 Roy. Soc. Proc., 49, 1891, 491-508. 



72. On the limit of visibility of the different rays of 

 the spectrum. Preliminary note. Roy. Soc. Proc., 49, 

 1891, 509-518. 



73. Grease-spot photometer measures. Soc. Chem. 

 Ind. JL, 10, 1891, 18-20. 



74. On the estimation of star magnitudes by 

 extinction with the wedge. Astr. Soc. Month. Not., 

 52, 1892, 426-429. 



75. The sensitiveness of the eye to light and colour. 

 [1892.] Roy. Inst. Proc., 13, 1893, 601-611. 



76. On the use of rapidly moving sensitive surfaces. 

 [With discussion.] Photogr. JL, 17, 1893, 235-242. 



77. On errors that may arise in estimating star 

 magnitudes by photography. [1893.] Astr. Soc. Month. 

 Not. , 54, 1894, 65-67. 



78. Chemical action and exposure. [With discussion.] 

 [1893.] Photogr. JL, 18, 1894, 56-71. 



79. On the colours of sky light, sun light, cloud 

 light and candle light. [1893.] Roy. Soc. Proc., 54, 

 1894, 2-4. 



80. On failure of the law in photography that when 

 the products of the intensity of the light acting and of the 

 time of exposure are equal, equal amounts of chemical 

 action will be produced. [1893.] Roy. Soc. Proc., 54, 

 1894, 143-147. 



81. Graduating wedges. Astr. Soc. Month. Not., 

 54, 1894, 368-370. 



82. Measurement of colour produced by contrast. 

 Roy. Soc. Proc., 56, 1894, 221-228. 



83. The artificial spectrum top. [1895.] Nature, 

 51 (1894-95), 292. 



84. Orthochromatics. Colour sensitometry. [With 

 discussion.] Photogr. JL, 19, 1895, 328-342, 389. 



85. BECQUEBEL'S colour photographs. Nature, 54 

 (1896), 125. 



86. Printing density in negatives. [With discussion.] 

 Photogr. JL, 20, 1896, 294-300. 



87. The spectrum sensitiveness of a silver salt. 

 Photogr. JL, 20, 1896, 325. 



