I40 



M. DE Zach's AJironomical Objervailons, 



Clock flower than equated folar time 19th March 21 6 

 ■ 1 8th March 19 32 



Retarding of the clock upon 23 h. 58' 8" - i 34 



I obferved too the mid-day at the great gnomon of the ob* 

 fervatory, and found at the fame time the meridian line erro- 

 iieous by 1 9'', as you will find in the following tables. 



When the center of the fun's 

 image was on the meridian the 

 time pointed by the clock was 



Equations of thofe days 



} 



the 

 17th 

 Mar. 



11 50 50 



12 8 33 



17 



Retarding on equated folar time 

 Retarding the 17 th 



Retarding of the clock during thofe 2a. hours 



^3 



the 

 i8th 



Mar. 



11 47 a 



12 7 57 



19 19. 



I 35, 



] tixed therefore the retarding of the clock i' 2>S'^ • 



True 



