No. 00 176. 



Fundamental Experiments, Electroscopes. 



799 



60 169. 



60 170. 



60 172. 1 = 4. 



60 171. 



60173. 1:7. 



60174. 1:7. 



60 175. 1 : 5. 



60 176. 1 : 5. 



60,169. Simple Paper Electroscope (Lehmann's), Figure (Fr. phys. Techn. II, 1, Fig. 6) 



60,170. idem, double (Fr. phys. Techn. II, 1, Fig. 7), Figure 



60,171. Parchment Strips, as suggested by Kiessling, on insulating stand, Figure (Fr. 



phys. Techn. II, 1, Fig. 5) 



60.172. Foot or Stand Clamp (Holtz's), Figure, with ribbed ebonite insulation (Ztschr. f. 

 d. phys. u. chem. U. 2, p. 55) 



Parts of apparatus for use with Holtz clamps: see under. 



60.173. Insulating Stand (Mascart's), Figure, consisting of a bottle to be partly filled 

 with sulphuric acid, and with a support passing through the neck for taking a stage 

 (Fr. phys. Techn. II, 1, Fig. 26; Gan.-Eein., Fig. 707) 



60.174. Apparatus for Demonstrating the Neutralisation of Opposite Kinds of Electricity, con- 

 sisting of rod and rubber (Franklin's Law), Figure (Fr. phys. Techn. II, 1, Fig. 38) 0. 14. 



60.175. Paper Electroscope (Kolbe's), Figure, with amber insulating neck (Kolbe-Skellon, 

 Introduction to Electricity, Part I, Fig. 3) 



60.176. Aluminium Leaf Electroscope, Figure, with amber insulating neck 



s. d. 

 0.12.0 



0. 8. 



0. 3.0 



0. 6. 



0.13.0 



0.12.0 

 0. 10. 



Cl. r,(112. 5008. 5B09, 

 55S4, 

 5125, 5613, 2061, 2065. 



