514 



Accessories for Spectrum Apparatus. 



No. 54145 



54 145. 1 : 7. 



54 146. 1 : 8. 



54 147. 1 : 2. 



54 149. 1 : 4. 



54 150 54 154. 1 : 8. 



54 155 54 159. 1 : 8. 



54.145. Apparatus for investigating Metal Spectra by the aid of the spark intensified by the * 

 Leyden Jar, Figure 1.12.0 



There ;ire supplied with the apparatus metal points of copper, brass, iron, aluminium and German 

 silver. For Condensers: see Electricity Section. 



54.146. - - idem, simpler, Figure.... i 0. 16. 



54.147. Spark Tube after Delachanel and Merniet (Fulgurator), Figure (W. u. E. phys. 

 prakt., Fig. 189) 



54.148. - - idem, with stand 



54.149. i d e m, after Vogel, Figure (M. P. 9 th Edn., II, 1, Fig. 219 ) 



Sparking Pillars for Metal Spectra and Spark Tubes for Liquids, after Browning, combined with 

 Condenser for intensifying the spark, Figure. 



List No. 54,150 54,151 54,152 54,153 54,154 

 For induction Coils 



with Spark Lengths of mm 60 100 150 200 LT.O 



5.0.0 6.0.0 9.0.0 12.0.0 15.0.0 



Sparking Pillars after Browning, Figure, as before, but witli device for inserting 2, 4, 

 6, 8, 10 20 condenser plates for intensifying the spark as desired. 



List No. 54,155 '54,156 54,157 54,158 54,159 

 For Induction ('oils 



with Spark Lengths of mm o 100 150 200 250 



7.0.0 8.0.0 11.0.0. 14.0.0 17.0.0 



54,160. 2 Sheet Iron Electrodes for producing the Spectra of incandescent Vapours (M. T. 

 Fig. 145) 



C'l. 1415,1416, 

 1417. 1418 



o. ;;. d 



0. 12. 

 0.15.0 



0. 4. 



1419,3838, 



