APPARATUS. 2 11 



(8) DIRECT VISION SPECTROSCOPE. 



Konkoly, N. von. Centralztng. f. Opt. u. Mech. 9 (1888) 1-3; Beibl. 

 (1888) 657. 



(9) DISPERSION APPARATUS. 



Gramont, A. de. C.-R. 128 (1899) 1564-1568. 



Guglielnio, G. Rend. Accad. Lincei (4) 6 (1890) 195-199; Beibl. 

 (1891) 105. 



(10) DYE-STUFF SPECTRUM PHOTOMETER. 



Patterson, T. L. J. See. Chem. Industry, Manchester 9 (1890) 36; 

 Beibl. (1892) 606. 



(11) ECHELON SPECTROSCOPE. 



Michelson, A. A. Astrophys. J. 8 (1898) 37-47; see Mann in Sci. 

 8 (1898) 208-210. 



(12) ECLIPSE SPECTROSCOPES. (Look also under Telescopes.) 



Spee, E. Bull. Acad. Roy. Belgique (3) 30 (1895) 274-276. 

 Zenger, Ch. V. C.-R. 121 (1895) 406-408; Bull. Soc. Belg. d'Astron. 

 I (1896) 8-12. 



(13) ELECTRIC APPARATUS. 



Barus, C. Phys. Rev. 4 (1897) 400-404. 



Bose, J. Ch. Phil. Mag. (5) 43 (1897) 55-69, 260. 



Buti, G. Atti Accad. Nuovi Lin. 44 (1891) 170-172; Beibl. (1893) 



339- 

 Dennis. L. M. J. Amer. Chem. Soc. 20 (1898) i; Beibl. (1898) 218. 

 Des Coudres, Th. Ann. Phys. n. F. 62 (1897) 134-144. 

 Fuchs, P. Ztsch. f. Glasinstrum .-Industrie 7 (1897) 4-6; Beibl. 



(1898) 218. 

 Gouy. C.-R. 121 (1895) 201—202. 

 Hull, G. F. Astrophys. J. 6 (1897) 141-144. 

 Lagrange, Ch. C.-R. 120 (1895) ^333- 



Martini, T. Riv. Sci. Industr. 23 (1891) 135-136; Beibl. (1891) 713. 

 Perry, J. Proc. Roy. Soc. 51 (1891) 455-463. 

 Rowland, H. A. Johns Hopkins Univ. Cir. 2 (1892) 104-105. 

 RtUherford, E. Proc. Roy. Soc. 60 (1896) 184-186. 

 Thompson, S. P. Nature 56 (1897) 342-343. 



