PHYSICAL anv LITERARY. 199 
double range of colours, like thofe of the 
rainbow, formed round the fhadow. The 
colours of the uttermoft range were broad 
and very diftinét, and about two feet diftant 
from the fhadow every where; then there 
was a darkith interval, and after that another 
narrower range of colours, clofely furround- 
ing the fhadow, which was very much con- 
tracted. 
Ir is remarkable, that there is a ring of 
light; brighter than ordinary, that furrounds 
the thadows of all bodies; occafioned by 
the infleGtion of the rays of light, as they 
pafs by the furfaces of thofe bodies. But I 
dare not proceed to offer my conjectures in 
what manner this infle€tion of the rays con- 
‘tributes to the formation of thofe ranges of 
colours. | 
ArT. 
