APPENDIX. 1,613 



minutes : and as a candid inveftigation of a matter that 

 had fo much engaged the attention of the beft philofo- 

 phers and mathematicians was the only objedl of my wifh,. 

 I judged it beft, in the firfl: place, to give the obf^rva- 

 tions juft as they were made, regularly numbered, that 

 they may be readily referred to from the following tables,, 

 in which the order of the original obfervations is varied, 

 according to the periods of time between each pair of ob- 

 fervations. By thus giving the foundations on which the 

 conclufions depend, all perfons, who chiife it, may trace 

 and examine every ftep towards the conclufion, and by 

 that means be enabled to deted any error that may have 

 crept into the operation; or draw fuch further conclu-. 

 ifions as their ingenuity may fuggefl:, and the materials 

 here given may warrant. 



To find the time of the fun's diameter paffing a vertical hair. (Cotes, /EJim. 

 Error, Theor. ai.) 

 As the produa of f Cofme declination - _ Comp. Ar. 0,03024^ 



(^CofineS.. — Comp. Ar. 0,00778 



Is to the produ£l of Radius and Cof. Altitude ; — — I9j97298 



So is tlie fun's diameter in time i35",6, — — 2^13226 



Xo the. time fought 139",! =2' 19",! — 2,14326 



It was obfervcd — 2' ai",o 



Difference i",9 



Although the obfervation of the fun's diameter paffing the wire has no immediate 

 tonneftion with our conclulion ; yet the agreement between the calculated and the 

 obferved time of its paffmg, ferves to fliow that the proper allowance was made for. 

 the obliquity of the ilireftion in which it paiTed the wire. . 



Day 



