1D510         ; mapped                 ; 006D          # 3.1  MATHEMATICAL FRAKTUR CAPITAL M
1D511         ; mapped                 ; 006E          # 3.1  MATHEMATICAL FRAKTUR CAPITAL N
1D512         ; mapped                 ; 006F          # 3.1  MATHEMATICAL FRAKTUR CAPITAL O
1D513         ; mapped                 ; 0070          # 3.1  MATHEMATICAL FRAKTUR CAPITAL P

whereas in this case the thickness of the Water, at which they arrived when viewed most obliquely, was to that thickness which exhibited them by perpendicular Rays, something less than as 8 to 5. By the best of my Observations it was between 15 and 15-1/2 to 10; an increase about 24 times less than in the other case. Sometimes the Bubble would become of an uniform thickness all over, except at the top of it near the black Spot, as I knew, because it would exhibit the same appearance of Colours in all...

of the Water, at which they arrived when viewed most obliquely, was to
that thickness which exhibited them by perpendicular Rays, something
less than as 8 to 5. By the best of my Observations it was between 15
and 15-1/2 to 10; an increase about 24 times less than in the other
case.

Sometimes the Bubble would become of an uniform thickness all over,
except at the top of it near the black Spot, as I knew, because it would