most copiously reflected in the same Series. Also by the 5th and 16th
Observations, A6 and HN will denote the Thicknesses at which those
extreme Colours are most copiously reflected in the second Series, and
A10 and HQ the Thicknesses at which they are most copiously reflected in
the third Series, and so on. And the Thickness at which any of the
intermediate Colours are reflected most copiously, will, according to