guage is certain to prove injurious if not disastrous to our American colleges. Progress of knowledge, the spirit of the age, and the requirements of the American people must count for more than has been yielded to them if these institutions are to increase in influence and prosperity. He says;
Origin of Cultivated Plants. By Alphonse De Candolle. New York: D. Appleton & Co. Pp. 468. Price, $2.
Although a thoroughly popular work interesting to everybody, this volume is nevertheless a monument of laborious and learned research. Its author is not only one of the most eminent botanists of the age, but he has been for many years especially devoted to this subject. He published an extensive work thirty years ago on "Geographical Botany," one chapter of which was devoted to the "Origin of Cultivated Plants," and he has since pursued the subject so systematically and perseveringly that the field is now his own. The present book, however, is entirely new, and gives what is known of the history of nearly all plants which are cultivated, either on a largo scale for economic purposes, or in fields, orchards, and kitchen gardens.
The work, as may be supposed, has been one of very great difficulty. Lack of knowledge, doubtful statements, and, what is worse, long sanctioned and established error, have proved formidable difficulties in the way of research. Plants, like men, have not only traveled over the globe from region to region, undergoing changes in their migrations into new environments, but they have been directly modified by domestication, so that only thorough botanical knowledge can trace their lineage and throw light upon their origin. In some cases the original wild species are probably extinct, and in other cases the cultivated varieties have lapsed into the wild condition, so that the problem of identification is liable to be much obscured. But greater difficulties still have arisen from the fact that botany is a modern science of which the ancients knew very little, so that their descriptions are imperfect and untrustworthy. The embarrassments of the research are, moreover, heightened by that revolution in regard to the validity of evidence which science has wrought in recent times. All statements have to be questioned and sifted, and loose opinions thrown aside by the more exacting standards of proof which men of science now recognize. On these points, and with reference to the general plan of his inquiries, Professor De Candolle remarks: