Transcriber’s Notes
Punctuation, hyphenation, and spelling were made consistent when a predominant preference was found in the original book; otherwise they were not changed.
Simple typographical errors were corrected; unbalanced quotation marks were remedied when the change was obvious, and otherwise left unbalanced.
This book uses both “reactions” and “reäctions”.
[Page 17]: “Cobalt” was printed as “Cobolt”; changed here.
[Page 23]: The “constitutional” formula in the original book was printed with the two “B”s stacked, one above the other, and in a smaller font that could fit both of them on one line of normal-sized text.
[Page 49]: “allotrophic” was printed that way; probably should be “allotropic”.