lyo 



APPENDIX. 



hooks to dlftinguifh it, that every perfon may have an 

 opportunity of judging how far it ought to be admitted. 

 Upon the whole it appears, that by the revolution of 

 the fun, correfted for the oblique diredion in which it 

 paffed the vertical wire in the telefcope, the change of 

 declination and the equation from the time of its Weft limb 

 touching the wire on the i6th, to the time of its touching 

 the fame wire on the 17th of July, that the pendulum 

 gained feventy-fivefeconds in twenty-four hours. But as the 

 mean height of the thermometer for the time of this ex- 

 periment was 9^* lower than 60^, the height at which it 

 was at London when the pendulum was compared with 

 the clock; the pendulum ought on this account, 

 according to Mr. Smeaton's experiments, to have been 

 contraded .-sVc-o of ^n inch, and to have gained on that 

 account 2, "7 2 ; fo that the acceleration of the pendulum 

 ariiing only from the difference between the latitude of 

 London and 79" 50' N, is 72^2 8. 



The pendulum was continued in motion, and thecom- 

 parifons between it and the watch made as before, with 

 intention to take a fecond revolution of the fun : but at 

 eleven o'clock next morning, the wind being fair, and 

 the weather cloudy fo as to afford no profpect of feeing the 

 fun in the afternoon, the inftruments were taken on board, 

 and the {hips failed immediately. 



Augufl: 



