The Index was not checked for proper alphabetization or correct page references.
Some values in the original book are known today to be incorrect, but have not been changed here.
[Page 133]: The last equation on the page,
μ = μ₀ (1 + .00275 t - .00000034 t²)
was misprinted as
μ = μ₀ {1 + .00275 t .00000034 t²}.
It is shown here with corrections based on its cited source:
[https://archive.org/details/s05philosophicalmag21londuoft/page/212]
[Page 144]: “possibly of ether atoms bound with them” was printed that way, but “ether” may be a misprint for “other”.
[Page 170]: “hence at C, where they touch” was printed as “A”, but Figure 1 at that point is labelled “C”.