Punctuation and spelling were made consistent when a predominant
preference was found in this book; otherwise they were not changed.
The original text contained many typographical errors. The simple ones
were corrected without comment here; others are noted below.
Unbalanced quotation marks were corrected, as proper placement always
could be determined.
Some typographical errors probably remain undetected.
Ambiguous hyphens at the ends of lines were retained; occurrences of
inconsistent hyphenation have not been changed.
Text uses both “Acadamy” and “Academy”; both retained here.
Page 336: “The disagreeable sensation experienced by Dr. Siemens in the
stove-heated railway cars, etc., were probably due to this” was printed
that way. Either “sensation” should be “sensations” or “were” should be
“was”.