CATALOGUE. METEOROLOGY, PRESERVATION FROM LrOHTNING. 485 



Measures of Atmospherical Elec- 

 tricity. 



Franklin's electrical kite. Ph. tr. 1751. 565. 



Romas. S. E. II. 393. 



Hartmann liber die erforschung der electri- 

 cit'iit. 4. Haiiov. 1764. 



Gallitzin. A. Petr. II. ii. 76. 

 A kite. 



Lichtenberg's meteorological electroscope. 

 Goth. Mag. I. i. 157. 



Boyer Brun on an electroscope for a conduc- 

 tor. Roz. XXVIII. 133. 



Read. Ph. tr. 1791 185. 1792. 225. 



Read on the electricity of the earth and at- 

 mosphere. 



Preservation from Lightning. Con- 

 ductors and Precautions. 



W'mkler dc avertendi fulminis artificio. 4. 



Leipz. 1753. 

 Watson on conductors. Ph. tr. 1764. 201. 

 Delaval. Ph. tr. 1764. 227. 



Recommends a conductor 6 or 8 inches by J for St. 

 Bride's church. 

 Wilson on blunt conductors. Ph. tr. 1764. 



24.6. 

 Wilson's dissent from a committee, witU ex- 

 periments. Ph. tr. 1773. 48, 49. 



Wilson says, that points attract discharges, which are 

 eften dangerous. A bat, near 4- inches by ^ an inch, was 

 probably heated red hot in St. Paul's, March 177*. 

 Wilson's experiments in the Pantheon and 

 elsewhere. Ph. tr. 1778. 232, 999- 



A point was struck at a greater distance than a ball. 



Proposal of a committee for securing St. 



Paul's. Ph. tr. 1769. l60. 



Recommends 4 bars not less thai* an inch squaie, to se- 

 cure the lantern. 



Winn on a conductor for a ship. Ph. tr. 1770. 

 188. 



Leioy on con-liictors. A. P. 1770. 53. H. 14. 



1773. 599. H. 3. 1790. 472, 588. Roz. 



XLIII. 94. 

 Franklin. Ed. ess. III. 129. 

 Franklin on electricity. 

 Fdbiger Kunst gebaiide zu bew'ahren.S.BresI. 



1771. 

 *Keport of a committee on securing powder 



magazines. Ph. tr. 1773. 42. Consisting 



of Cavendish, Watson, Franklin, and \ 



odiers. 



They recommend pointed conductors ; ar.d adhere to 

 theiropinion. Ph.tr. 177«, 



Henley on conductors. Ph. tr. 1774. I3S. 



In favour of points. 



Henley and Haffenden on a house with a 

 conductor that was struck. Ph. tr. 1775. 

 336. 



Henley. Ph. tr! 1777. 85. 



Observes, that lampblack and tar act as a pres^atife 



from lightning. 



Tetein iiber die sicherung seiner person, 8. 



Biltzow, 1774. 

 Gudcn von der sicherheit wider die donner- 



strahlen.B. Gott. 1774. 

 Swift on conductors. Ph. tr. 1778. 155. 1779* 



454. 



In favour of points. 

 Papers relative to an accident at Purfleet. 



Ph. tr. 1778. 232. 

 Musgrave's dissent from the committee. Ph. 



tr. 1778. 801. 



Observes, that other things being equal, points are struck 

 farther off than balls. 



*Nairne's experiments in favour of pointed 

 conductors. Ph. tr. 1778. 823. 



Says, that other things being equal, balls are struck fur- 

 ther otf than points. Thus a point, moving swiftly under a 

 conductor, approached nearer to it without being struck 

 than a ball. Peihaps, however, there was time for a par- 

 tial discharge in silence ; if sp, 3 point must have great 

 power in producing such a discharge. 



