16 
A VOYAGE TO 
[In England. 
1801. The deficiency of seven, and the two young gentlemen more 
than allowed, left the whole number of persons on board to be eighty 
eight, at the time of sailing. 
Mr. Crosley, the astronomer, brought with him an assortment 
of instruments from the Board of Longitude; part for use at sea, 
and the larger instruments for making observations on shore, at such 
ports and bays as we might anchor in during the voyage. His 
time keepers were the numbers 543 and 520, and watch 4,65 of 
Earnshaw; and the numbers 176 and 82 of Arnold. Amongst the 
instruments supplied to me by the Navy Board, which were uncon- 
nected with the above and mostly intended for surveying, was 
Arnold's watch number 1736, sent for the purpose of being taken up 
rivers in the tender, or in boats. Its error from mean Greenwich 
time, at noon July 17, was 2' 38", 71 slow, and its rate of losing per 
^ a y 4"> 4 1 - This error and rate were given me by Mr. Bayly, 
mathematical master of the naval academy at Portsmouth, who had 
the kindness to take charge of the watch during our stay at Spithead. 
