3*8 



A VOYAGE TO 



1779- it as fpanngly as pomble, the watch appeared to go free 



October. , ii '■ ' 



and well. 



Having received orders the next day to go to Bolcheretfk, 

 the time-keeper was left in the care of Mr. Bayly to com- 

 pare it with his watch and clock, in order to get its rate. 

 On my return, I was told it had gone for fome days with 

 tolerable regularity, lofing only from fifteen to feventeen 

 feconds a-day, when it flopped a fecond time. It was again 

 opened, and the caufe of its flopping appeared to be owing 

 to the man having put fome part of the work badly toge- 

 ther when he firft opened it. Being again adjufted, it was 

 found to gain above a minute a day ; and, in the attempt 

 to alter the regulator and balance-fpring, he broke the 

 latter. He afterward made a new fpring ; but the watch 

 now went fo irregularly, that we made no farther ufe of it. 

 The poor fellow was not lefs chagrined than we were, 

 at our bad fuccefs ; which, however, I am convinced was 

 more owing to the miferable tools he was obliged to work 

 with, and the ftifFnefs his hands had contracted from his 

 ordinary occupation, than to his want of fkill. 



For the fatisfaction of thofe who may wifli to have a 

 general view of its rate of going, I have added the follow- 

 ing table. 



The firfl: and fecond columns contain the dates when, 

 and the names of the places where, its rate was obferved. 

 The third column contains the daily error of its rate, fo 

 found from mean lime. The fourth column has the lon- 

 gitude of each place, according to the Greenwich rate > that 

 is, calculated on a fuppofition that r he time-keeper had not 

 varied its rate from the time it left Greenwich. But as wc 

 had frequent opportunities of ascertaining the variation of 

 2 its 



