[64] Lectures on the Evolution of Plants. By Douglas Houghton Campbell. New York: The Macmillan Company. Pp. 319. Price, $1.25.
[65] On the Study and Difficulties of Mathematics. By Augustus De Morgan. New edition. Chicago: The Open Court Publishing Company. Pp. 288.
Transcriber's Notes:
Obvious printer's errors have been repaired, other inconsistent spellings have been kept, including inconsistent use of hyphen (e.g. "long-continued" and "long continued") and proper noun (e.g. "Yang-tse-Kiang" and "Yank-tse-Kiang").
Some illustrations were relocated to correspond to their references in the text.