loth in the morning Dolland's glass was down to 

 half a degree below zero; and Martin's, which ab- 

 surdly was graduated only to 4 above zero, was 

 quite into the ball : so that when the weather be- 

 came most interesting, it was quite useless. On the 

 loth at eleven at night, tho' the air was perfectly 

 still, Dolland's glass went down to i degree below 

 zero ! This strange severity had made my Bro : and 

 me very desirous to know what degree of cold there 

 might be in such an exalted situation as Newton: 

 We had therefore on the morning of the loth written 

 to Mrs. Yalden, and entreated her to hang-out her 

 Therm"" made by Adams ; and to pay some attention 

 to it morning, and evening, expecting wonderful 

 doings in so elevated a region. But behold on the 

 loth, at II at Night it was down only to 19 ! and the 

 next morning at 22, when mine was at 10! We were 

 so disturbed at this unexpected reverse of comparative 

 local cold, that we sent one of my glasses up, think- 

 ing Mr. Y:'s must, some how be constructed wrong. 

 But when the instruments came to be confronted, 

 they went exactly together. So that for one night 

 at least, the cold at N : was 20 degrees less than at 

 S: and the whole frost thro' ten or twelve. And 

 indeed, when we came to observe consequences, we 

 could readily suppose it. For all my laurustines, 

 bays, Ilexis, and what is much worse my fine sloping 

 laurel-hedge, are all scorched up, and dead ! while at 



Newton the same trees have not lost a leaf ! We 



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