Nci. 54015. 



Solid Prisms. Hollow Prisms. 



501 



54 007. 1 : 2. 



54 006. 1 : 2. 



54000. 1:4. 



54012. 2:5. 



54009. 



54 010. 1 : 5. 



54015. 3 



s. d. 



54.004. Carbon Bisulphide Prism, flask form, Figure . 0. 16. 



54.005. --idem, of black glass, with plate glass sides . 0. 18. 



54.006. Hollow Prism of solid glass with a perforated aperture and two plate glass discs, 

 Figure (Gan.-Atk. Fig. 535) 0. 14. 



54.007. Hollow Prism after Meyerstein, pierced, Figure, with detachable surfaces and 

 accurately ground angle of 35, in metal mount, aperture 20 mm (M. P. II, 1, Fig. 159 



[177]; W. u. E. phys. Prakt., Fig. 147), for determining the refractive indices of liquids 3. 0.0 



VI, 008. -- idem, with quartz walls 4.10.0 



54.009. Hollow Prism of solid glass, after Steinheil, Figure, with pierced aperture 20 mm 

 diameter, closed by two plane parallel glasses which are pressed on to the glass body 4. 10. 



54.010. Hollow Prism on Stand, with two compartments, Figure, in brass mount . . 2. 4. 



54.011. - - idem, with three compartments 2. 16. 



54.012. Hollow Prism of Crystal Glass, Figure, assembled with acid-proof cement fused 

 in the fire, for any liquids alcohol, water, acids, etc.; one side blackened, with care- 

 fully ground in glass stopper; outside dimensions: height 75 mm, side 35 mm ... -0.10.0 



54.013. -- idem, height 90 mm, side 60 mm 0.16.0 



54.014. - - idem, height 100 mm, side 80 mm 1. 0. 



54.015. Hollow Prism with Partition Wall, of crystal glass, Figure, for filling simulta- 

 neously with two different liquids, with wood support. Outside dimensions: Height 



100 mm, side 60 mm . . 1. 0. 



Cl. 1328, 1321), 1330, 1333. 1335, 

 1334, 1331, 1336. 



