[ 3 6 ° ] 
tranfit of Venus in 1761, by Mr. Short, Mr. Canton, 
Mr. Haydon, and Mr. Mafon, when the Sun was at 
a confiderable altitude ; and mod likely the Sun’s di- 
ameter was enlarged in proportion, though it might 
have been difficult to have afcertained it by actual 
meafure, had time allowed me to make the experi- 
ment with the fame micrometer before the Sun en- 
tered into a black cloud near the horizon. 
Six other perfons alfo obferved the contads of 
Venus here, and noted fome other phenomena. 
Their names are, the Rev. Malachy Hitchins, a gen- 
tleman well acquainted with aftronomy and aftrono- 
mical calculations, who has made and examined 
many belonging to the Nautical Almanac, and has 
been fo obliging as to come here and aiiift me in 
making aftronomical obfervations, during the abfence 
of my aftiftant, Mr. William Bayley, who is gone to 
the North Cape, by appointment of the Royal So- 
ciety, to obferve the tranfit of Venus there. The 
others are, the Rev. William Hirft, who obferved the 
former tranfit of Venus, in 1761, at Madrafs ; John 
Horfley, Efq; a gentleman whom I had the pleafure of 
firft commencing an acquaintance with during my voy- 
age from St. Helena to England, in the Warwick Eaft- 
India (hip, and who then, and in feveral voyages fince to 
the Eaft Indies and home again, obferved and cal- 
culated the longitude from diftances of the Moon 
from the Sun and fixed ftars with the greateff accu- 
racy; Mr. Samuel Dunn, who has had a good deal 
of practice in making aftronomical obfervations, and 
who carefully obferved the former tranfit of Venus, in 
1761, at Chelfea; Mr. Peter Dollond, whofe great 
fkill in conftrudting achromatic and reflecting te- 
lefcopes ; 
