t 313 ] 
contaf)’, the circular border of light became of a 
more duflvy colour, efpecially at the two points 
where the luminous fegments of the Sun’s limb 
were rcady to dofe round the Planet. This 
‘‘ dullcinefs did not feem to part wholly from the 
Sun’s limb, at the time I apprehended the body of 
“ Venus to be wholly entered on the Sun, and when 
“ I gave the fignal for the internal contad; which 
“ was noted at 28' 58^' by the clock. And I 
judge from to 8'^ more, before I faw the Sun’s 
limb clear of this duiky furrounding fhadow, and 
“ as well defined as before the firft contad.” 
Dr. Smith’s Account of the Contacts. 
“ Having, for reafons already afiigned, determined 
to continue one of the fmaller powers of the Grego- 
rian refiedor, for obferving the contads (viz. that 
which we had been ufing, and were again toufe, with 
the micrometer, magnifying 95 times), I had a large 
“ field, takingin,atleaft,onehaIfoftheSun’sdifk; and 
the telefcope was fo firmly fupported (with its axis 
“ in a polar diredion), that it could not be fhakeft 
by aUy motion on the earthen floor of the obferva- 
“ tory, and required only a fmall movement of one 
“ of the handles of the rack-work to manage it. 
With thefe advantages, it was eafy to keep any 
part of the Sun’s limb in the- middle of the field, 
“ without negleding to cafl: my eye, every three or 
“ four feconds, on every other part of the limb 
VoL. LIX. S s 
