370 SKC. 11. ASTRONOMY. 



1874. Carrington's Astronomical Chronograph, made 

 by Smith and Beck. Exhibited by Dr. Stone. 



1875. Electro-magnetic Registering Apparatus. 



M. Th. Edelmann, Physico- Mechanical Institute, Munich. 



IX. -EDU CATIONAL. 



1876. Sphere, moved by clockwork, of the Burgh Institution 

 (1580). 



1877. Sphere, moved by clockwork, of Jean Reinhold (1588). 



1878. Sphere bearing traces of M. Foucault's observations on 

 the Kotatory motion of the Earth. 



Conservatoire des Arts et Metiers, Paris. 



1879. Apparatus for demonstrating the Retrogradation of 

 the Superior and Inferior Planets, also of the Synodic 

 Revolutions, the Transits of Venus and Mercury, &c. 



J. J. Oppel. 



The long wire represents the line of vision, the small shield at one end 

 the apparent position of the planet, the fixed ball at the other end the earth, 

 and the movable ball the planet. The latter is fixed on the pivot of the 

 smaller or larger turn-table, according as it is wished to demonstrate the 

 retrogression of an inferior or superior planet. The twelve signs of the zodiac 

 are hung up on the walls of the lecture room ; the handle must be turned to 

 the right ; the angular movement of the line of vision to the right demon- 

 strates the retrogression. 



1880. Cosmographical Apparatus, to explain various natu- 

 ral phenomena, made by M. Robert, of Paris, and purchased for 

 the South Kensington Museum in the Paris Exhibition of 1867. 



1. The seasons. 



2. The seasons. 



3. Phases of the moon. 



4. Eclipses. 



5. Librations of the moon. 



6. Real and apparent motion of the planets. 



7. Fall of bodies. 



8. Inequality of the seasons. 



9. Precession of the equinoxes, physical. 



10. Precession of the equinoxes, geometrical. 



11. Precession of the equinoxes, mechanical. 



12. Star to indicate a point in space. 



1881. Nutoscope. Apparatus showing the laws of preces- 

 sion and nutation, and the conservation of the plane of rotation. 

 With diagrams, constructed by the aid of the apparatus. 



Professor Carl Wenzel Zenger, Prague. 



