290 cook's VOYAGE TO OCT. 



success ; which, however, I am convinced was more 

 owing to the miserable tools he was obliged to work 

 with, and the stiffness his hands had contracted from 

 his ordinary occupation, than to his want of skill. 



For the satisfaction of those who may wish to have 

 a general view of its rate of going, I have added the 

 following table. 



The first and second columns contain the dates 

 when, and the names of the places where, its rate 

 was observed. The third column contains the daily 

 error of its rate, so found from mean time. The 

 fourth column has the longitude of each place, ac- 

 cording to the Greenwich rate ; that is, calculated 

 on a supposition that the time-keeper had not varied 

 its rate from the time it left Greenwich. But as we 

 had frequent opportunities of ascertaining the varia- 

 tion of its daily error, or finding its new rate, the fifth 

 column has the longitude, according to its last rate, 

 calculated from the true longitude of the place last 

 departed from, The sixth is the true longitude of 

 the place, deduced from astronomical observations 

 made by ourselves, and compared with those made 

 by others, whenever such could be obtained. The 

 seventh column shows the difference between the 

 fourth column and the sixth in space; and the eighth 

 the same difference in time. The ninth shows the 

 number of months and days in which the error, thus 

 determined, had been accumulating. The difference 

 between the fifth and sixth columns is found in the 

 tenth, and shows the error of the time-keeper, ac- 

 cording to its rate last found in space ; and the 

 eleventh, the same error in time. The twelfth con- 

 tains the time elapsed in sailing from the place where 

 the rate was last taken, to the place whose longitude 

 is last determined. The thirteenth and fourteenth 

 contain the state of the air at the time of each ob- 

 servation. 



As persons, unaccustomed to calculations of this 

 16 



