24 



JOURNAL. 



June. beer was made to laft the whole voyage, and the water 

 -^ — ' confiderably faved. One half of this allowance was ferved 

 immediately after dinner, and the other half in the even- 

 ing. It was now light enough all night to read upon 

 deck. 



13th. The weather ftill fine, but confiderably lefs 

 wind than the day before, and in the afternoon more 

 Northerly. The longitude at ten in the morning was 

 found by my watch 0° 6' W. We took three obfervations 

 of the moon and fun for the longitude ; the extremes dif- 

 fered from one another near two degrees : the mean of 

 the three gave the longitude 1° 37' E. At noon the la- 

 titude obferved was 59° 32^ 31'^ We found a difference 

 of 36' between the latitude by dead reckoning and obfer- 

 vation, the jfhip being fo much more Northerly than the 

 reckoning. The diftance by this log was too Ihort by 

 forty-three miles. A log marked forty-five feet, accord- 

 ing to the old method, would have agreed with the ob- 

 fervation within two miles in the two days' run. The cir- 

 cumllance of fleering upon a meridian, which afforded me 

 fuch frequent opportunities of detecting the errors of the 

 log, induced me to obferve with care the comparative ac- 

 curacy of the different methods of dividing the line, re- 

 commended by mathematicians, or pradlifed by feamen. 

 In the afternoon I went on board the Carcafs to compare 

 the time- keepers by my watch. At fix in the evening 

 the longitude by my watch 0° 4 E. This evening the fun 



fet 



