CATALOGUE. ELECTRICAL APPARATUS. 



431 



Excitation. Electrical Machines 

 for applying Friction. 



Hawksbee on a globe lined with sealing wax. 



Ph. tr. 1708. XXVI. 219. 

 Winkler Beschreibung einer electrisirma- 



schine. 1"44. 

 Faure Coiigeuure intorno alia machina elet- 



trica. 4. Rome, 1747. 

 Plate machines used by Planta, 1760. 



Epinasse on electrical machines. Ph.tr. 1767. 

 186. 



Lines the cylinder with a resin. 



Leroy on an electrical machine for produc- 

 ing both species of electricity. A. P. 1772. 

 i. 499. H. 9. 



Leroy's electrical pump. A. P. 1783. 6l5. 



Nooth on the cushion and flap. Ph.tr. 1773. 

 333. 



Schmidt Beschreibung einer electrisirma- 

 schine. 1778. 



Larigenbiicfier Beschreibung einer clectri- 

 sirmaschme. 1778. 



Ingenhousz on the plate machine. Ph. tr. 

 1769. 659. 



Varnished pasteboard succeeded well in dry rooms. 



Brilhac on an electrical plate machine. R02 

 XV. 377. 



Bertholon's electrical machine. Roz. XVI. 

 74. 



An electrical machine, moved by clock- 

 work. Roz. XIX. 149, 



Goth. Mag. I. i. 83. 



Kohlreif on the cushion. Goth. Mao-. I. iii. 

 101. 



Ron/and description des machines a taffetas. 



8. Amst. 1785. 

 Van Marum Description d'une tr^-s grande 



machine electrique. 4. Haarl. 178j. R. S. 



Roz. XXVII. 148. 



Fan Marum Lettre sur un,e machine elec- 

 trique. 4. R. S. 



Van Marum Continuation d'experiences. 4. 

 Haarl. 1787. R. S. 



Van Marum description des fiottoirs elec- 



triques. 4. Haarl. 1789. R. S. Roz. 



XXXIV. 274. 



On a mode of applying the silk, before praciiscd in Ens- 

 land. ^ 



Van Marum on the Teylerian machine. Roz 



XXXVIII. 109. 

 Van Marnm's new and simple plate machine. 



Roz. XXXVIII. 447. 



Imitating Nicholson's improvements. 



Van Manim on the electrical machine. Roz. 

 XL. 270. 



Van MarumSeconde continuation. 4. Haarl 

 1795. R. S. 



Van Marum and Pfaff's comparison of Vol- 



ta's pile with the Teyleiian machine. Ph 



M. XII. 161. 

 Prieur's extract on the Teylerian machine 



Ann. Ch. XXV. 312. 

 Tries's claim to Van Marum's machine. 



Roz. XL. 1 16. 

 Leroy's electrical machine. Roz. XXIX. 



129. 

 Nairne on his patent electrical machine. 8. 



Lond. 1787. R. S. Repert. VH. 380. 

 SeiferhMs electrisirmaschine. Nuremb. 



1767. 

 Cavallo's remarks on the rubber and flap. 



Ph. tr. 1788. i. 

 Attributes the effect to a compensation. 



Saint Julien's electrical plate machine. Roz. 



XXXIII. 367. Fig. 

 ♦Nicholson's experiments and observations 



in electricity. Ph. tr. 1789. 26o. Nicb. I. 



83. 



The hand was the first rubber, then the simple cushion 

 was applisd, and a flap was added to it, then the rubber 



