xxii Contents 



PAGE 

 OF MS. ARTICLES 



80. Whether charge of glass plate is the same when warm as when cold . . . 549 



81. Crown with slit coatings and H with oblong compared with white cylinder; also 

 second thermometer tube with D + E + F 55 



82. Quantity of electricity in plate D, and rosin with brass coatings, compared with 

 that of tin circle of 36", and one of 30", by machine for trying simple plates with 

 different degrees of electrification SS 1 



83. Charge of compound plate of glass and rosin ....... 552 



85. Circle of i8J" compared with double plates; also plate D, plate air, and the two 

 double plates compared with circles of 36" and 30" 553 



86. yo&yi. The same with addit. four small rosin plates ..... 554 



87. Whether the four rosin plates contain same quantity of electricity when close 

 together as when at a distance, tried by machine for Leyden vials . . . 555 



8y. Whether charge of white glass thermometer tube is the same when hot as when 



cold 556 



92. Allowance for connecting wires in p. 86, &c 557 



93. Whether charge of the four rosin plates is the same when close together as when 

 at a distance. Also on excitation of electricity by separating brass plate from 



glass one 558 



94. Comparison of Henly's, Lane's, and straw electrometer 559 



95. Excess of redundant fluid on the positive side above the deficiency on the negative 

 side in glass plate and plate air, and compound plate of p. 83, compared with 

 charge of simple plate . . . . . 5 



99. Whether parallelepiped box included in a hollow box of the same shape is over- 

 charged on electrifying the outer box 5 O1 



100. Globe within hollow globe tried again 562 



105. Whether the force with which two bodies repel is as the square of the redundant 



fluid, tried by straw electrometers 563-? 



113. Separation of Henly's electrometer by different strengths of electrification . 568 



115. Separation of Henly's electrometer when fixed in the usual way and on upright 



rod 569 



116. Result of the comparison of different electrometers in pp. 70, 75, and 95 . . 570 

 118. Comparison of Lane's electrometer with light straw electrometer in different 



weather 57 1 



121. Comparison of strength of shocks by points and blunt bodies . . . 572 



122. Whether shock of one jar is greater or less than that of twice that quantity of 



fluid spread on four jars 573 



123. Comparison of the diminution which the shock receives by passing through water 

 in tubes of different bores, and whether it is as much diminished in passing 

 through nine small tubes as through the same length of one large tube, the area 



of whose bore is equal to that of the nine small ones 574 



125. Comparison of the diminution of the shock by passing through iron wire or 

 through salt water 575 



126. Measures of glass tubes used in pp. 123 and 124 more accurate, with the com- 

 putations of those pages over again ......... 57 



127. Comparison of conducting powers of sat. sol. S.S.* and rain water . . . 577 



128. Whether the electricity is resisted in passing out of one medium into another in 

 perfect contact with it 57$, 579 



1 29-1 3 1 . Comparison made at Nairne's of his Henly on conductor, and on upright rod 580 



Here ends Cavendish's Index 

 * Sea salt. 



