88 
AT SEA. 
September 18. Being anxious to get a sight of the land, in 
order to determine its position we bore towards it in the afternoon, 
and at sunset made Cape Delgado, distant seven leagues, bear- 
ing S. W. when from our reckoning we concluded that the coast 
from Mosambique is in most charts made to incline too much to 
the eastward, and this remark is confirmed by a valuable chart 
of this part of the coast copied from one lent me by the Governor 
of Mosambique, which on my return to England I presented to 
the Admiralty. This chart comprehends a complete survey, from 
Mosambique Harbour to Cape Delgado, embracing the whole of 
the Querimbo Islands, on an extended scale of twenty-seven 
inches to a degree. It was taken at the expense of the Portu- 
guese government by a colonel of engineers whose name I 
have now forgotten, and it carries the appearance of being 
extremely accurate : a few valuable remarks are annexed to 
it respecting the rivers, the depth of water, and other subjects 
interesting to nautical men. I have employed it in my ge- 
neral chart of the coast. Lat. at noon 10° 26' 30'' S., Long. 
4V 45' E., Therm. 77, Var. in the morning 20° 0', in the afternoon 
19° 2' W. 
September 19. Our course was this day N. b. E. In the 
afternoon, we saw a great many medusae and other species of 
mollusca3 floating by the sides of the vessel. Lat. at noon 8° 6' S., 
Long. 41° 54' E., Therm. 78, Var. A. M. 18° 30', P. M. 19° W. 
September 20. We had this day a strong current running 
one mile and a quarter per hour in our favour, Lat. at noon 
6° 1'30" S., Long. 42^31', Therm. 79, Var. P. M. 16° W., the wind 
S.S.E. to S.E. 
