C 468 ] 
It always followed, that the greater depth of the 
water I looked through, in the dire&ion from my 
eye, to the objects in the water, the nearer thole ob- 
iedts appeared to me. Thus light bodies appeared 
more mellow and faint, and dark bodies rather better 
defined, than out of the water, when they weie not 
deeply immerfed. And thus they appeared under 
whatever directions or poiitions I viewed tne bodies. 
17. I placed different bodies in proper veffels of fair 
water, and immerfed my lace in the water ; viewing 
the bodies in and through the water, they all ap- 
peared to me plain, when not too far from the eye, 
and although a little hazy at the edges, they appeared 
much enlarged, and always larger through a greater 
depth of water. Thus, a fhilling appeared nearly as 
large as half a crown, with a red glowing arch on 
that fide oppofite to the Sun, when the Sun fhined 
on the water. From this experiment, I concluded, 
that divers fee light objedts not only larger, but very 
diftinClly in the water. 
18. Thefe, and leveral other circumftances, being 
conlidered, they left me with but little doubt, whe- 
ther the atmofphere refradts horizontally or not, as the 
afore-mentioned protuberances in the Sun s limb muff 
have been wholly owing to fuch a caufe, and the nearly 
allied ftrata in the atmofphere. That the apparently 
formed mountains of trees and bufhments at fun- 
riling, fo eafily comparable with other trees and bufh* 
ments of equal magnitude at other times, but in their 
affeCted ftate as much larger, mud alfo be owing to 
the fame caufe. That feeing the nature and pioper- 
ties of thofe ffrata of horizontal vapours cannot differ 
from each other, as much as the whole quantity of 
medium, 
