LITERATURE 07 THE SPECTROSCOPE. 15 



Note on a direct-vision spectroscope on Thollon's plan, adapted to lab- 

 oratory use and capable of giving exact measurements. 



Liveing (G. D.) and Dewar (J.). Proc. Royal Soc, 28, 482-483 ; Bei- 

 blatter, 3, 709 (Abs.). 



Ein Spectroskop a vision directe mit nur einem Prisma. 

 Emsmann (H.). Ann. Phys. u. Chem., 150, 636. 



A direct-vision compound prism by Merz; with dispersion almost double 

 that of flint glass. 



Gassiot. Proc. Royal Soc, 24, 33. 



Combinazioni spettroscopiche a visione diretta. 

 Ricco (A.). Mem. Spettr. ital., 8, 21-34. 



Ueber ein verbessertes Prisma a vision directe. 

 Braun (C). Ber. aus Ungarn, 1, 197-200. 



Note on a new form of direct-vision spectroscope. 



Liveing (G. D.) and Dewar (J.). Proc. Royal Soc, 41 (1886), 449- 

 452. 



DISPERSION APPARATUS. 



Das Dispersionsparallelopiped und seine Anwendung in der Astrophysik. 

 Zenger (K. W.). Sitzungsbcr d. Bohm. Ges. (1S81), 416-429; Bei- 

 blatter, 6, 286 (Abs.). 



Sur un spectroskope a grande dispersion. 



Cornu (A.). Jour, de Phys., 12 (1883), 53-57; Amer. Jour. Sci., (3) 

 25, 469. 



Sur un spectroscope a grande dispersion. 



Cornu (A.). Seances de la Soc franc, de Phys., 1882, 165-170; Bei- 

 blatter, 7, 285 (Abs.); 8, 33 (Abs.). 



Bemerkungen fiber die Einrichtung eines Dispersiometers. 

 Mousson (A.). Ann. Phys. u. Chem., 151, 137-145. 



ECLIPSE APPARATUS. 



(See "Solar and Stellar App.") 



EFFICIENCY OF SPECTROSCOPES. 



Efficiency of different forms of the spectroscope. 



Pickering (E. C). Amer. Jour. Sci., 95, 301, and (3) 22, 397. 



