CATALOGUE. — ELECTRICAL APPARATUS. 



433 



Klindwoith. Goth. Mag. I. ii. S5. 

 Obert. Goth. Mag. V. iii. 96. 

 -Minkeler. Goth. Mag. V. iii. 110. 

 •f-Sch'dffer AbbWduog des electricit'atstiagers. 



4. Ratisb. 1776. K. S. 

 iS'cAa^erkr'attedeselectiophors.4. Rat. 1776. 

 Schuffers f'ernere versuche. Ratisb. 1777- 

 Adanison electricity. 8. London, 1784. 181. 

 Robert on the electrophorus. Roz. XXXVII. 



183. 

 Nich. I. 355. 



The barrier, which the surface of the electrophorus pre- 

 sents, seems to be analogous to the operation of the galva- 

 nic battery. 



"Nicholson's revolving doubter is somewhat similar in its 

 operation to the electrophorus. See Microelectrometer. 



Conductors. 



Volta on a shock from a conductor. Roz, 



XIII. 249. 

 Sulla capacity dei conduttori elettrici. 4* 



R.S. 



Nicholson. Ph. tr. 1789. 



Never uses points for a conductor, but a ball brought 

 near to the cylinder, or the cushion without a rubber. 



Coated Jars and Batteries. 



See Charge. 



Kleist discovered the effect of charged glast in 1745. 



[Needham on some experiments made at Pa- 

 ris. Ph. tr. 1746. XLiV. 247. 



Lcmonnier discovered the permanency of the charge- 

 NoUet gave a shock to 180 guards at once. 

 Dutoiir on charged talc. A. P. 1753. H. 76. 

 Wilson's experiments. Ph. tr. 1778. 995. 



Found that a point was struck at the greatest distance. 

 On the advantage of paper under the coatj- 



ins;. Brooks, c. iii. 



Says, that it prevents the jats breaking. 

 Van Mai urn's battery. Gilb. i. 68. 

 Halriaiie on the force of a battery. Nich. I. 

 156. Giib. m. 22. 



VOL. II. 



Cuthbertson's improvement on batteries* 

 INich. 11.525. Gilb. III. 1. 



A battery of talc. Nich. 8. V. 2l6. 



Robison says, that a globe is the best form for a jar. 

 Partisil damp is said to make a battery capable of a great 

 intensity of charge. 



Electrical Measures in general. 



Achard on the force of electricity. Berl. 



Naturf. fr. I. 53. 

 Robison. Enc. Br. Suppl. Art. Electrometer. 



Measures of Tension. Simple Electrometers, 



Darcy's electrometer. A. P. 1749. 63. H. 7. 

 Richmann's electrometer. N. C. Petr. IV. 



301. 

 Hd^ley's quadrant electrometer. Ph. tr. 



177i. 359. 

 Comus's electric platometer. Roz. VII. 520. 

 Cavallo's electrometers. Ph. tr. 1777. 388. 



1780. 15. 



For the pocket, and for atmospherical observations, 



Brooks's electrometer. Ph.tr. 1782.384. 

 An electrical balance. 



Terry's electrometer. Roz. XXIV. 315. 



An electrometer. Roz. XXV. 228. 



*Coulomb's electrical balance. A. P. 1785. 



569. 

 Employs the torsion of a wire. 



Saussure's electrometer. Voyage. IFI. Ixxviii. 

 Boyer Brun's electroscope for a conductor, 



Roz. XXVllI. 183, 

 Deluc's fundamental electrometer. Idees. I, 



cccxcvii. Gren. I. iii. 380. 

 Rennet's electrometer. Ph.tr. 1787.26. Nich. 



II. 438. 



Of gold leaf. 



Chappc's electrometer. Roz. XXXIV. 370. 

 Vassalli's elcctrometrical experiments. M. 



Tur. 1790. V. 57. 

 Improved electrometer. Nich. I. 270. . 



3K 



