TRANSIT OF MEReURV. JJ 



- (4-.) Dec. 28, 1782. 17'' 30'. The water condenfing on 

 my tube keeps running down ; yet I have feen very well all 

 night. I was obliged to wipe the objed-glafs of my finder 

 almoft continually. The fpecula, however, are not in the leafl 

 afFe6led with the damp. The ground was fo wet that, in the 

 morning, feveral people believed there had been much raih in 

 the night, and were furprifed when I aflured them there had 

 not been a drop. 



(5.) Feb. 19, 1783. I have feen perfedly well till now* 

 that a froft is coming on ; though Datchet Common, which is 

 jufi: before my garden, is all under water; and the grafs on 

 which I fland with my telefcope is as wet as poffible. 



(6.) Feb. 26, 1783. AH the ground is covered with fnow; 

 yet I fee remarkable well. 



p.) March 8, 1783. The common before my garden is all 

 under water; my telefcope is running with condenfed vapour; 

 not a breath of air ftirring. I never faw better. 



(8.) Auguft 25, 1783. My telefcope ran with water all 

 the night. The fniall fpeculum, which fometimes gathers 

 moifture, was never afTeded in the 7-feet tube, but was a little 

 fo in the 20-feet. The large eye-glaffes and objed-glaffes of 

 the finders, required wiping very often. I faw all night re- 

 markably well. 



(9.) Oft. 30, 1779, It grows very foggy, and the moon is Whether fogs 

 furrounded with ftrong nebulofity ; neverthelefs, the ftars are *'?^^''' ^^^Z'*"- 



i-o- I /• 111 tinftnefsof 



very diumct, and the telefcope will bear a confiderable power, telefcopes. 



(10.) Auguft 20, 1781. It is fo foggy that I cannot fee an 

 objed at the diftance of 40 feet; yet the ftars are very diftindl 

 in the telefcope. By an increafe of the fog, a Pifcium can no 

 longer be feen by the eye ; yet, in the telefcope, it being dou- 

 ble, I fee both the ftars with perfed diftindnefs. 



(11.) Sept. 6, 1781. A fog is come on; yet I fee very 

 well. 



(12.) Sept. 9, 1781. There is fo ftrong a fog, that hardly 

 a ftar lefs than 30^ high is to be feen ; and yet, in the tele- 

 fcope, at great elevations, I fee extremely well. 



• The time is not marked in the journal j but, from the number 

 of the oblervations that had ^been made during the night, it muft 

 Jiave been towards morning. 



(13.) March 



