| Method |
"...[in] the first method, the mean refractive index of the bacilli was measured
by immersion refractometry, and the mean phase-retardation through their
mid-line was obtained from phase-change measurements on the bacilli
mounted in dilute saline. Their mean thickness was calculated from these
values.
With the second method, phase-change measurements were made on the bacilli mounted in protein mounting media as well as in saline, and the two
sets of measurements were used to obtain values for their mean thickness." |