[ 73 ] 
count, by the exprefiion, no lofs of light , I mean, 
that at thofe times the thread of light was not 
broken, but only obfcured by the brown or dark 
penumbra which interpofed between Venus and the 
limb of the fun. 
In the drawings,TAB. III. Fig. i. 2.3. 4. 5.6. fhew 
the penumbra which interpofed in 1761, with the 
corefpondent times. Fig. 11. 12. 13. 14. 15. 16. are 
the fimilar appearances in 1769. Oppofiteto which 
are the times of thofe appearances by different telef- 
copes, which table of different telefcopes was formed 
from experiments. Fig. 7. 8. and 9. 17. 18. and 
1 9. fhew how much the planet’s figure differed from 
a circle in both tranfits. Fig. 10. fhews the external 
contact for 1761, and Fig. 20. the external con- 
tad: for 1769, and Fig. 21. 22. 23. 24. 25. 26. 27. 
28. are more exad reprefentations of the phenomena 
at the times there mentioned. 
Samuel Dunn. 
Vol. LX. 
L 
X. An 
