Changed what appeared to be upsilon with inverted breve to upsilon with perispomeni in the Greek on page 2.

Changed 'Kilarrea' to 'Kilauea' on page 19: Mauna Loa and Kilarrea.

Changed 'Kilanea' to 'Kilauea' on page 39: Kilanea, 4158 feet.

Made punctuation (semi-colons) consistent in caption to figure 16.

Changed 'Brionde' to 'Brioude' on page 94: till at Brionde it becomes.

Changed 'occuping' to 'occupying' on page 96: occuping a hollow.

Changed 'Rodesberg' to 'Roderberg' on page 118: old extinct volcano of Rodesberg.

Changed 'Wolkenberg' to 'Wolkenburg' on page 118: and that of the Wolkenberg.

Left the reference to Jeremiah, l. 25. in footnote to Part III Chapter I, although Jeremiah, li. 25. seems more appropriate.

Changed 'fumarols' to 'fumaroles' on page 137: fumarols give evidence.

Removed extra comma on page 153: of the present, epoch.

Changed 'columnal' to 'columnar' on page 176: the columnal structure.

Changed 'groves' to 'grooves' on page 183: the groves and scorings.

Changed 'Angust' to 'August' on page 212: the 27th of Angust.

Changed 'mikroskopischen' to 'mikroskopische' on page 260: Über mikroskopischen Structur.

Changed 'become' to 'becomes' on page 260: the rock become a leucite-basalt.

Left inconsistent spellings of 'Baalbec' and 'Baalbeck'; 'Harrat' and 'HarrÂt'; 'mÈtres' and 'metres'; 'pitchstone' and 'pitch-stone'; 'prehistoric' and 'pre-historic'; 'RhÔne' and 'Rhone'; 'sub-aerial', 'subaËrial' and 'subaerial'; 'tableland' and 'table-land'.

Left the list numbering as is at the beginning of Chapter II of Part IV, even though the list begins at item c, as if it continues the list which began in the previous chapter.

Footnotes were collected at the end of each chapter, and text was flowed to move illustrations between paragraphs. This has some effect on the index, since the referred-to text may have been moved to a different page.