1018 



Voltaic Electricity. Section 8: Electric Conduction in Gases. 



No. ii:u>8i 



63 087. 1 = 5. 



63 088 a. 



1 : 4. 



63 088 b. 



63089. 1:4. 



Cookes Apparatus 

 for Experiments on Radiant Matter. 



The numbers of the tubes correspond to the figure-numbers of the work: 



63.081. Radiant Matter, or the fourth Aggregate Condition, by William Crookes, German 

 text by Dr. H. Gretschel, Leipsig, Quandt and Handel, 1879 



The text beyond the bracket corresponds to the titles of the chapters. 



63.082. No. 1. With l>;isc. Figure (M. I'. 9 th Edn., Ill, Fig. 769), for demonstrating 

 the dark space 



0. 2.6 



63.083. No. 2. Without stand, 3 tubes, Figure 



63.084. --idem, 5 tubes, Figure 



63,085. No. 4. With base, Figure (M. P. 9 th Edn., Ill, 



Fig. 766) 



63,086. No. 5. With stand, Figure (M. P. 9 th Edn., Ill, 

 Fig. 772) 



Kadiant Matter exerts 

 a powerful phosphoro- 

 genic action where it 

 occurs. 



Cl. 2921. 2918, 



2917,2919, 2920, 

 099, 2923, 2924. 



