SOURCE: "A Synopsis of Evolution," in The New York Times Book Review, Saturday, July 2, 1910, p. 371.

In the following review of The Evolution of Man, Voorhees offers a positive appraisal of the work, in spite of what he considers Haeckel's penchant for digression and speculation.

The venerable author of this exhaustive work (The Evolution of Man) is one of the most interesting figures in contemporary scientific thought. It is fair to say that no other biologist, save perhaps the famous Metchnikoff, has been more widely read. We might add that no one has been more generally assailed for the free expression of his extremely radical views. It cannot be gainsaid that Prof. Haeckel is most interesting when he deals with established facts, possessing as he does a wide knowledge of several related sciences and the ability to set forth what he has to say in a graphic and convincing...