662 



Cosmology. 



No. 55498-55504. 



55499. 



55 504. 1 : 2. 



55,498. Mang's collapsible Horizontarium; can be used at same time for demonstrating tlic s- d. 

 apparent motion of tlie stars for any point of the earth. With directions and box . j 2.10.0 



55.499. Mang's collapsible Armillary Sphere, F i g n r e, consisting of tlie preceding Hori- 

 zontarium with a simple terrestrial sphere; with directions and box 



55.500. Mang's collapsible Telurion-Lunarion, shewing the actual motions, proof of sphericity, 

 oblate ring, existence of day and night, time, the degree in perpendicular axial position; 

 with a powerful lamp, sliding concave mirror, directions and box 



55,501. Extra Globe with water and land 



55,502. Mang's collapsible Universal Apparatus for Astronomical Geography, containing a 

 Horizontarium, an Armillary Sphere, Tellurion with Lunarion, a Planetarium; com- 

 prises all motions of the celestical bodies, enables demonstration of the lunar epicycloid, 

 demonstration of the precession, migration of the apparent lunar orbit, parallax of the 

 fixed stars, etc.; on stand with instructions 



* :>.~>,r><>3. Rotary Star Chart of the Northern altitudes, Figure, for the latitude of Leipzig, 

 with a disc having network of degrees and a disc without network; arranged for the 

 Projection Lantern 



For demonstrating the motion of the circumpolar stars. The firmament can he set for any hour 

 of tlie day. It is jiossihle with the chart to solve the problems of the rising and settini; of the stars 

 and their culminations. 



#.">.">,."> I) I. Universal Clock, Figure, for explaining the times in different parts of the world, 

 with the times of the most important towns noted, for objective projection; with 

 rntai-v disc 



4. 0. 



2.10.0 

 0. 8.0 



16.10.0 



2. 0.0 



1. 8.0 



X- 



* Can lie used with the Projection apparatus. 



Cl. 410, 

 309.'), 409. 



