TO GUAHO.V. 227 



and blubber, and had become very lieavy. Notwith- 

 standing this, the owner declared he would not 

 part with it in spite of all their jokes; and he in 

 fact wore it, till, one day, in taking in a sail on 

 the top-yard, it fell from his head, and luckily, 

 only on the back of another ; had it fallen on his 

 head from this height, he might have been killed. 

 He now threw it overboard the second time, and 

 thought that the shark must have been the devil 

 himself, who had tried to catch his poor soul, by 

 bringing back the unfortunate cap. 



The following observations were made to-day, 

 with the Six-thermometer. 



Temperature of the air - - - S5° 70' 



Temperature on the surface of the water 87 40 

 At a depth of 15 flithoms - - - 79 00 

 Do. - - 50 - - - - 59 00 



Do. - - 69 - - - - 51 40 



Do. - - 101 - - - . 49 50 



I observed to-day the transparency of the water 

 with a white plate, and found that it was visible 

 at a depth of twenty-seven fathoms : the previous 

 observations of this kind had been made with a 

 piece of red cloth. I daily let down the Six-ther- 

 mometer about eighty fathoms, to observe the 

 difference, when the water should have resumed its 

 dark azure colour. 



The 20th. When we were in latitude 10° 42'; 

 longitude, according to the chronometers, 209° 51', 



Q 2 



