No. 63 051. 



Geissler Tubes. 



1015 



feOP=^rr,. - ... .-...^csi> 3 



63039. 



63 040. 1 : 4. 



63042. 1 : 10. 



63043. 1 : 5. 



63046. 1:5. 



63036. 1:4. 



63048. 1:7. 



63,038. Geissler Tube, large pattern, with 2 fluorescent liquids, approx. 50 cm high, Figure, 



on base 



Geissler Tubes, Figures, with pulverulent phosphorescent substances 



List No. 63,039 63,040 63,041 

 Number of Substances 124 

 Approx. Length cm 25 35 50 



0.3.0 0.5.0 0.12.0 



63.042. Geissler Tube, Figure, with luminescent gas, bent simply, approx. 60 cm long 



63.043. Geissler Tube, Figure, with stratified light, cylindrical, approx. 35 cm long . . 



63.044. - - i d e m, 50 cm long 



63.045. - - i d e m, 100 cm long 



63.046. Geissler Tube with stratified light, Figure, with bulbs, approx. 50 cm long (cf. 



Gan.-Man. Fig. 678; Gan.-Kcin. Fig. 993) 



63.047. - - idem, approx. 100 cm long 



63.048. Geissler Tube, Figure, filled with three different gases, approx. 75 cm long . 



63.049. - - idem, approx. 100 cm long 



63 050. - - idem, approx. 150 cm long 



63,051. - - idem, filled with 2 gases, approx. 35 cm long 



Spectrum Tubes: see p. 515 of this price list. 

 : 



s. d. 

 1. 0. 



0. 15. 

 0. 4.0 



o. 6.;o 



0. 10. 



0.10.0 



0. 18. 

 0. 15. 



1. 0.0 

 1.10.0 

 0. 5.0 



ci. 



6585, 

 6522, 

 2904, 

 2905, 



2901, 2906, 

 2900, 2907. 



6521, 



