Professor Montgomery of the University of Texas regards his work as a prologue rather than an exhaustive treatment of his subject. Giving the experimental method credit for everything that it can do in the direction of interpreting phenomena he turns to the value of the comparative method of which he makes critical tests.


“Has attained a large measure of success in presenting the general problems of evolution as they appear to-day, with the necessary technicalities succinctly and, on the whole, clearly presented.”

+ Nation. 82: 529. Je. 28, ’06. 240w.

“A valuable contribution to the methodology of difficult problems in evolution.”

+ + Outlook. 83: 335. Je. 9, ’06. 200w. Putnam’s. 1: 384. D. ’06. 100w.

“Scholarly work.”

+ R. of Rs. 34: 384. S. ’06. 70w.

“The author’s intimate acquaintance with the great wealth of phenomena and with the extensive literature dealt with in this book, makes it one of particular importance and value to biological students.” E. G. Conklin.

+ + Science, n.s. 24: 173. Ag. 10, ’06. 2080w.