0807 Measurement of Angles 



Decimal system for angles and time. Dufour, C. 



Laus. S. Yd. Bll. 34 (1898) 367-. 

 . Mehmke, R. [1899] D. Mth. 



Vr. Jbr. 8 (1900) (Heft 1) 139-. . 

 . Bauschinger, J. [1899] 



D. Mth. Vr. Jbr. 8 (1900) (Heft 1) 159-. 

 . Schiilke, A. [1899] D. 



Mth. Vr. Jbr. 8 (1900) (Heft 1) 164- ; D. Nf. 



Vh. (1899) (Th. 2, Hfilfte 1) 282-. 

 . Mendizdbal Tamborrel, J. 



de. Mex. S. "Alzate" Mm. 13 (1900) (Mth. 



Suppl.) 12 pp. 

 , with tables for reduction. 



Goedseels, . Brux. S. Sc. A. 23 (1899) 



(Pt. 2) 263-. 

 Differences, small angular, measurement. 



Langner, H. Z. Instk. 6 (1886) 299-. 

 Dividing engine (von Beichenbach's). Liebherr, 



J. Gilbert A. 67 (1821) 109- ; 69 (1821) 320-. 

 . Reichenbach, G. E. von. Gilbert A. 68 



(1821) 33-. 

 . Wegener, T. (xn) Z. Instk. 3 (1883) 



117-. 



, automatic. Saegmilller, G. N. Z. 

 Instk. 14 (1894) 84-. 



, Girgensohn's. Lenz, E. [1844] St. 



Pet. Ac. Sc. Bll. 3 (1845) 52-. 

 , Bamsden's. Wollaston, W. H. QJ. Sc. 



12 1822) 381-. 



engines. Kuntz, . A. Gen. Civ. 7 (1868) 

 816-. 



, Bamsden and early. Watkins, J. E. 



Smiths. Bp. (1890) 721-. 

 Division of angles, apparatus for. Eoz, . 



Cg. Int. Chron. (1900) 212-. 

 Glass circle for angles. Rutherfurd, L. M. 



Am. J. Sc. 12 (1876) 112-. 

 Goniograph, double reflecting. Gelcich, E. 



Z. Instk. 7 (1887) 93-. 

 Goniometer, crystal, new. Czapski, S. Z. 



Instk. 13 (1893) 1-, 242-. 

 , , adjustment for. Schneider, E. Z. 



Instk. 4 (1884) 242-. 

 , new form. O'Reilly, J. P. [1872] Ir. Ac. 



P. 1 (1873-74) 294-. 

 , reflection-. Rudberg, F. Stockh. Ak. 



Hndl. (1826) 218- ; Kastner Arch. Ntl. 10 



(1827) 461-. 

 , . Borsch, (Dr.) [4.] A. Ps. C. 129 



(1866) 384-. 

 , . Lang, V. von. [1875] Wien Ak. D. 



36 (1876) (Ab. 1) 41-. 

 Instrument, new. (Pantogon.) Domke,J. Z. 



Instk. 20 (1900) 360-. 

 Instruments for graduation. Troughton, E. 



Phil. Trans. (1809) 105-. 

 (Troughton). Cavendish, H. Phil. 



Trans. (1809) 221-. 



Interferometer applied to small angles. Wads- 

 worth, F. L. O. Ps. Bv. 4 (1897) 480-. 

 Lorgnette goniometrique. Soret, J. L. [1888] 



Arch. Sc. Ps. Nt. 21 (1889) 21-. 

 Mirror method, magnification of measurement 



by. Lermantoff, W. J. de Ps. 10 (1891) 34-. 

 reading, correction. Schuster, A. Ps. Z. 



1 (1900) 225-. 

 , polyoptric. Julius, W. H. Amst. Ak. 



Vs. 6 (1898) 481- ; Z. Instk. 18 (1898) 205-. 



Measurement of Time 0809 



Mirror and scale, measurement by. Kohlrausch, 



F. A. Ps. C. 31 (1887) 95-. 



Prisms, achromatic, doubly refracting, adapted 

 for measurement of angles. Rochon, A. 

 J. de Ps. 53 (1801) 169-. 



Beflecting measuring instruments. Amid, 



G. B. [1836] Mod. Mm. S. It. 21 (1837) 

 142-. 



. Cubr, E. Casopis 2 (*1873) 233- ; 



Fschr. Mth. (*1878) 553. 

 Beflection methods for angles of altitude. 



Koristka, K. Grunert Arch. 27 (1856) 



275-. 



Bepetition, measurement of angles by. Four- 

 cade, H. G. S. Afr. Ph. S. T. 8 (1896) 



63-. 

 Bight angles, accuracy of instruments for 



production. Lorber, F. Z. Instk. 8 (1888) 



381-, 412-. 



Botating divisions, method of reading. Br od- 

 ium, E. Z. Instk. 17 (1897) 10-. 

 Botations, small, optical measurement. Ray- 



leigh, (Lord). Ph. Mg. 20 (1885) 360-. 

 , , . Wadsworth, F. L. O. Ph. Mg. 



44 (1897) 83-. 

 Solid angles, instrument for. Weber, L. Z. 



Instk. 4 (1884) 343-, 417-. 

 Tachymeter, Charnot's. Anon. A. Cond. 



Pon. Chauss. 33 (1889) 521-. 

 , Maury's. Anon. A. Cond. Pon. Chauss. 



42 (1898) 854-. 

 , Sanguet's. Anon. A. Cond. Pon. Chauss. 



42 (1898) 769-. 

 Telescope for horizontal and vertical angles. 



San-Roberto, P. di. Bm. B. Ac. Line. Mm. 



2 (1878) 502-. 

 , measurements by, influence of want of 



sphericity of objective. Krilss,H. Z. Instk. 



12 (1892) 199-. 

 Theodolite, eccentric. Vinton, F. L. [1871] 



Am. I. Mn. E. T. 1 (*1871-73) 63-. 

 , mining, new. Fric, Jos., & Fric, Jan. 



Z. Instk. 6 (1886) 221-, 305-. 

 with new micrometer. Heyde, G. Z. 



Instk. 8 (1888) 171-. 

 Theodolites, illumination. Fennel, A. Z. 



Instk. 8 (1888) 236-. 

 , influence of eye-piece on errors. Tinter, 



W. Z. Instk. 8 (1888) 241-. 



0809 Measurement of Time 

 (mechanical and electrical) ; 

 Chronometers. 

 (See also Astronomy 2100.) 



Absolute measurement by means of gravita- 

 tional attraction. Lippmann, G. C. B. 128 

 (1899) 1137-. 



unit of time determined by electrical stand- 

 ards. Lippmann, G. C. E. 104 (1887) 

 1070-. 



Chronodeik, for finding time within a second. 

 Chandler, S. C. (jun.) Obs. 4 (*1881) 

 14-. 



100 



