Page:Popular Science Monthly Volume 55.djvu/577

Rh comparability in data from census to census, lack of co-ordination, certain specified faults in method, and faults in the textual analysis of the figures. A summary of the answers received to the circular letter of questions is appended, particularly of the answers to the request to suggest what special information might be furnished by the twelfth census which is not in the eleventh. Many of the writers point to the desirability of a permanent census bureau. The committee has a right to congratulate itself, as it does, "upon this noteworthy collection of papers—the result of the scientific zeal and effort of so many men."

 

The qualification of Mr. Frederick A. Ober to write a book about Puerto Rico and its Resources is indicated by the facts that he visited every point of importance on the island in 1880, and revisited it as West Indian Commissioner for the Columbian Exposition. To the fruits of observations made during these two visits he has added information gathered from the books that have been written about Puerto Rico by Spanish and other officers. A plain, concise account of the island is presented, without sensational exaggerations and free from apparent padding. It begins with the consideration and estimation of the commercial and strategic value of the island. Next its coastal features, rivers—of which it seems to have a relatively good supply—and harbors are described. Then the climate, which is "hot and moist, yet in the main less injurious to the health of white people than that of adjacent islands"; seasons, which are not very variable; and hurricanes, which appear to be rather an important feature. As to products, they are of course tropical, and grow, as in Mexico, in three zones of climate and vegetation. Considering these more specially a chapter is given to Sugar, Tobacco, Coffee, and Cacao; another to Fruits, Spices, Cereals, and Food Plants; and a third to Dyes, Drugs, Woods, and Minerals. The chapter on Natural History includes accounts of game and insect pests. The topographic description begins with San Juan, the capital, and takes in the cities and towns of the coast and the inland towns and routes of travel. A few words are devoted to the government as it has been, and the general characteristics of the people are briefly sketched. Accounts of their foods, drinks, diversions, etc., are given, after which the author passes to the Indians of Puerto Rico. Two chapters relate to the general and the recent history of the island respectively. Considerable information of a statistical character is included in an appendix.

President D. S. Jordan's Footnotes to Evolution is made up of popular essays or addresses on the general subject of organic evolution which were given originally as oral lectures before University Extension Societies. Three of them have been also published in this Monthly, and as many in another magazine. Besides the author's own twelve essays, he has inserted in this volume three other papers of special importance, setting forth the present state of knowledge concerning the methods of evolution and of heredity. These are on the Factors of Organic Evolution as displayed in the Process of Development, by Prof. E. G. Conklin; the Physical Basis of Heredity, by Prof. F. M. McFarland; on The Testimony from Paleontology, by Prof. J. P. Smith. President Jordan's own essays begin with a discussion of the kinship of life. This is followed by three articles on evolution, relating to its nature, elements, and factors from the point of view of embryology, and an application of the subject in the paper on The Heredity of Richard Roe, in which the rise of race types from the survival of the existing race with its best results modified and preserved by the