Part 15

Mr. _Seward_ excuses himself in rather an apologetic way for undertaking to write a book on _Fossil Plants_[14] for the Cambridge Natural Science Manuals--a task which Professor Williamson, a founder of modern palæobotany, had considered too serious; but students of botany and geology have cause to thank him for having consented to attempt the writing of a book intended to render more accessible some of the important facts of the science, and to suggest lines of investigation in it. The botanist and geologist, not being always acquainted with each other's subjects in a sufficient degree to appreciate the significance of palæobotany in its several points of contact with geology and recent botany, the subject does not readily lend itself to adequate treatment in a work intended for students of both classes, and the author has accordingly tried to shape his treatment with this point in view, and so as to adapt it to both non-geological and non-botanical students. As a possible aid to those undertaking research in this field he has given more references than usually seem appropriate in an introductory treatise--often to specimens of coal-measure plants in the Williamson cabinet of microscopic sections, now in the British Museum--and has dealt with certain questions in greater detail than an elementary treatment of the subject requires. His plan has been to treat certain selected types with some detail, and to refer briefly to such others as should be studied by any one desiring to pursue the subject more thoroughly, rather than to cover a wide range or to attempt to make the list of types complete. The book opens with a sketch of the history of palæobotany, which is followed by a discussion of the relation of palæobotany to botany and geology. A succinct review of geological history is then given, in which the several principal formations are briefly described. The theory of the process of the preservation of plants as fossils is explained, the difficulties and sources of error in the determination of fossil plants are pointed out, and the rules for nomenclature and of priority in it are explained. The systematic part follows these introductory chapters, giving as full descriptions as the condition of the fossils admit, with illustrations--one hundred and eleven in all--of those belonging to the orders _Thallophyta_, _Bryophyta_, and _Pterodophyta_, carrying the subject as far as the _Sphenophyllales_. Technical as the subject necessarily is, the treatment is clear and, where the matter admits, fluent, so that no student need complain of difficulties in that line.

FOOTNOTES:

[13] The Historical Development of Modern Europe from the Congress of Vienna to the Present Time. By Charles M. Andrews. Vol. II, 1850-1897. New York: G. P. Putnam's Sons. Pp. 467. Price, $2.50.

[14] Fossil Plants. For Students of Botany and Geology. By A. C. Seward. With Illustrations. Cambridge, England: The University Press. New York: The Macmillan Company. Pp. 452. Pries, $3.

GENERAL NOTICES.

DR. _W. Detmer's Practical Plant Physiology_[15] is a book of experiments for the use of teachers as well as of students in higher-grade schools, and supplies an aid to the study of the whole of that branch of the science by experimental processes. While the arrangement of the material in the second German edition is essentially the same as in the first, nearly every section has been enlarged or remodeled, and the book is essentially a new one; new experiments have been included for lecture demonstration or private work, and pains have been taken to render the book increasingly useful to serious students of plant physiology, especially to those who desire to familiarize themselves with methods of research. Great care has been taken in the selection of research material recommended for the experiments; and material suitable for winter work has received attention as well as summer material. This second German edition is presented by the publishers in the translation in its entirety, without addition or alteration. The two great divisions of the book are into the Physiology of Nutrition and the Physiology of Growth and Movements resulting from Irritability. In the first division the experiments bear upon the food of plants (assimilation, production of proteids, constituents of the ash, and organic compounds as food for plants); the molecular forces and processes (including movements of gases, absorption and movements of water, and absorption of mineral substances in plants); and metabolic processes in the plant. In the second division the characteristics of growing plant structures, the conditions necessary for growth, the influence of internal causes and external conditions; geotropic, heliotropic, and hydrotropic mutations, and other phenomena of irritability; the winding of tendrils and twining plants; dorsicentrality, polarity, and anisotropy and phenomena of correlation; and movements of variation, are presented.

* * * * *

The primary objects of Mr. _Hoffman's The Sphere of Science_[16] are to point out what constitutes a science, and set forth the ground upon which every science rests and the principles and rules that must be followed in order to construct one. The author maintains throughout that every department of knowledge is capable of scientific treatment, and must be so treated before any great advance can be made toward a consistent and rational conception of the universe. The subjects are considered in succession of the true conception and aims of science, what it takes for granted, the scientific method, certainty and probability in science, the use of the imagination, analogy as an aid, the limitations of science, recent advances in the physical sciences, the old and new psychology, modern scientific ethics, philosophy as the science of the sciences, and the harmony of the sciences. The author holds that the chief need in all departments of thought is not so much mere facts as a new arrangement and classification of facts already at hand; that we can be certain of no doctrine, but the most we can do to establish it is to show that the balance of probabilities is in favor of it; that philosophy is the life of science and science the vital breath of philosophy, and if one is severed from the other both pine away and die; and that those scientific researches are successful which are not exclusively special, but are illuminated by an ample idea of science. The book is the outcome of a series of lectures given to classes in Union College to supplement their work in formal logic.

* * * * *

The _Text-Book of Geodetic Astronomy_[17] was prepared by Mr. _John F. Hayford_ to meet the conditions of the course at Cornell University, the terms of which the standard works now in use could not be made to fit. The purpose of the book is to furnish a text short and easy enough to be mastered by the student of civil engineering in a single college term which shall give him a sufficiently exact and extensive knowledge of geodetic astronomy to serve as a basis for practice in that line after graduation. While it is primarily a manual for students, the author has endeavored to insert such matter, tables, and convenient formulas as would make it of value also to the engineer making astronomical observations. Mathematical processes have been omitted, except those that are actually necessary for developing the working formulas, and simple and special means for deriving the formulas have been chosen in every case admitting choice. Considerable attention has been devoted to a discussion of the various sources of error in each kind of observations. Those formulas have been selected, so far as possible, that lead to accurate and rapid computation.

* * * * *

_L'Année Psychologique_[18] of M. _Alfred Binet_ and his colaborers in the Laboratory of Physiological Psychology of the Sorbonne, Paris, is now in its fourth year, and the four volumes present a compendium of the psychological studies and literature of the period they cover, the value of which will be appreciated by any one who has occasion to examine the work. The first volume was a book of 619 pages, with 33 figures; the second, of 1010 pages, 141 figures, and several plates; the third, of 825 pages, 103 figures, and numerous plates; and the present volume has 849 pages and 117 figures. The plan of all the volumes is the same; it is to present in full the labors of the laboratory, with original memoirs, and to give a condensed but adequate and classified summary of the world's literature of the year relating to the subject. The present volume contains twenty-seven original memoirs, mostly by Professor Binet and M. N. Vaschide, with others by M. B. Bourdon and Mr. A. Le Clère; about ninety reviews of books and papers, classified under sixteen heads, according as they relate to the physiology of the nervous system, the several senses, mental faculties and operations, movements, individual psychology and character, sleep, dreams, and pathological cases, and animal psychology; a bibliography, also classified, of 123 pages; and an index of authors, occupying 17 double-columned pages.

* * * * *

_Prof. Cyrus Thomas_ has given, in his _Introduction to the Study of North American Archæology_,[19] a brief summary of the progress in the investigation and study of the subject which has been made up to the present time. The increased activity among students, the numerous explorations made, the accumulation of data and the flood of light thrown on questions relating to prehistoric North America since the publication of the last general work on it seemed to call for such a summary. While the author's chief object is to present and arrange the data so as to afford the student some means of bringing into harmony and utilizing the facts and materials at hand, yet, in view of the impossibility of presenting a full account of the archæological remains of the continent, and discussing all the questions connected with them in a single small volume, only those considered the best representatives of the leading types and those which best illustrate the arts, customs, and culture status of the former inhabitants are referred to. The movements and remains are treated under the three heads of the Arctic, Atlantic, and Pacific divisions; the first including the works of the Eskimos, the second those of the mound builders, and the third the curious variety of works scattered along the Pacific coast, and in Mexico and Central America, rising to great elaboration in the latter countries. Theories have to be considered, though they are all still uncertain, and Professor Thomas notices the various views which have been expressed as to the origin of the works and the people who executed them. He himself believes that they are all the work of the peoples who lived here when America was discovered, and are represented by the present Indians; that they are not of a very extreme antiquity; and that the continent was peopled by tribes who came down from the northwest through the region between Hudson Bay and the Rocky Mountains.

* * * * *

Of Nature books encouraging the study of the life around us we have an abundance--of some sorts, perhaps, a superfluity--and they have their uses, one of the chief of which is drawing people, who might otherwise never think of it, to the observation of natural facts, and to inquiry into their character and causes. Such books are fittingly complemented by the _Handbook of Nature Study_,[20] of _D. Lange_, of St. Paul, Minnesota, which teaches how system may be introduced into this occupation. In it, the author has undertaken to point out some of the material which may be made the basis of profitable lessons in Nature study, and to show how this material may be made available, and what the pupils may be taught about it. The author has arranged the matter of the subject of his teachings according to seasons and life communities. He begins at home in the spring, and directs the wanderings of the pupils to the waters, fields, and prairies, the roadsides and neglected corners, studying besides the plants and animals, the geological action of water, the flowers of the fields and the needs of neglected places, window flowers, and domestic animals. Then he goes to the woods--in spring, in summer, and in autumn--and their plant and animal life, the effect of all these upon the earth, and their relations to one another. Some practical precepts are given to teachers concerning the method of conducting the study of Nature.

In the presentation of his conception of _The State_[21] or the Elements of Politics, Prof. _Woodrow Wilson_ has taken a comprehensive view. Designing a book for study and instruction, he has sought to set forth the evolution of existing systems of government from the beginning. Possessing no model, no text-book of like scope and purpose having apparently hitherto been attempted, he has had to make his own type; and, in the absence of anything else to refer the student to, has been obliged to include much that might otherwise have been omitted. The volume is consequently large; but this disadvantage, if it be one, is compensated for by the fact that the student has the whole subject before him. For his descriptions the author has chosen governments which are types of their several kinds. An indispensable prerequisite to studies of things of this sort is a knowledge of the constitutions of the states of classical antiquity; hence the institutions of Greece and Rome are studied: Greece, which furnished the spirit and inspiration under which the world has advanced; and Rome, which laid the foundations of modern jurisprudence. Before these, even, a glance at The Earliest Forms of Government, their Origin and Evolution, was required. Then, coming to modern systems, which are also traced in their historical development, "the government of France serves excellently as an example of a unitary government of one kind, and Great Britain equally well as an example of a unitary government of another kind; Germany exhibits a federal empire, Switzerland a federal republic of one sort, the United States a federal republic of another; Austria-Hungary and Sweden-Norway show the only two existing European types of dual monarchies." Russia might have been presented as having a place apart in European politics, but the book was full. The work has been prepared in the belief that "our own institutions can be understood and appreciated only by those who know other systems of government as well and the main facts of general institutional history." The accounts of the particular systems of government are followed by short chapters on the Nature and Forms of Government; Law, its Nature and Development; the functions and the objects of government; and summaries, in which the conclusion is expressed that law grows with the growth of the community, can not leap too far ahead of it, and must not lag behind it; and that "the method of political development is conservative adaptation, shaping old habits into new ones, modifying old means to accomplish new ends."

* * * * *

Mr. _H. E. Parkhurst_ has made in his _How to Name the Birds_[22] a book on a different plan from the other books about birds that are now appearing so abundantly--not to rival them, but to serve as an introduction to their more general use. It is intended to aid the field ornithologist in determining an unknown species, by calling his attention to their more obvious features and those more distinguishable from a distance than those which observers using the ordinary bird books have to depend on as a means of recognition. Color is chiefly relied upon, and, as a further means of finding the birds, they are grouped by the seasons, when they may be seen in a given locality--the summer, winter, migrant, and permanent birds, and birds of prey. The first four groups are subgrouped according to color, and the larger color groups are further subdivided. Other devices and signs are contrived, so that a complete description of the bird, as it will appear to the amateur watching it from a little way off, is given in three or four lines. To this a brief comment is added regarding the nesting and habits of the bird. These descriptions are preceded by an analytical key similar to the botanical keys; and the study is aided by giving three pages of diagrams illustrating the distinctive areas of the bird's body, to which reference is made in describing the colors, stripes, and spots. The list comprises only those birds that are normally found within the territory described in the title as regular summer or winter visitants, as migrants, or as permanent species.

* * * * *

A very important contribution to the economy of city administration is the quarterly _Supplement to Municipal Affairs_, June, 1898, in which the late superintendent of street cleaning in the city of New York, _George E. Waring_, Jr., presents his observations on street-cleaning methods in European cities, and general reports of his own work in that line. The observations in Europe, made in the summer of 1896, in a special study of the subject, for the information and improvement of Mr. Waring's own department, include accounts of the conditions as to cleanliness and the methods of doing the work in Vienna, Budapest, Munich, Berlin, Cologne, Brussels, London, Birmingham, Paris, Turin, and Genoa. Mr. Waring finds that the regulations under which the streets are really kept clean in those cities are no better than ours; "but there is the immense difference that in Europe laws and ordinances mean something and are executed, while here they are treated as mere matters of form." The reports of Mr. Waring's own work in New York embrace a review of the general operations of the department, the report of the snow inspector, and an account of the highly successful plan for the adjustment of labor questions instituted by Mr. Waring.

Mr. _Lauros G. McConachie_, in the study and development of legislative methods which he publishes under the title of _Congressional Committees_ (T. Y. Crowell & Co., New York, $1.75), assumes that a complete breakdown of parliamentary machinery took place on the floors of Congress under the sudden and vast augmentation of legislative burdens which our senators and representatives had to confront after the civil war. Two schools of reformers came to the front, one of which held up the British parliamentary system as a model and directed attention abroad in the search for light; while the other stood up for the defense of American legislative methods as developments of American political conditions. The author has sought a mean between these schools, and has tried to glean from contemporary debates, memoirs, newspapers, and other records the reasons assigned for each innovation as it has entered and enlarged the codes, and has taken the testimony of contemporary legislators upon the conditions prevailing in successive stages in the history of the national House and Senate. Among the lessons presented by the book are those of the tremendous power wielded by the speaker of the House of Representatives and of "other anomalies in a supposed elective folk congress."

* * * * *

_Whittaker's Mechanical Engineer's Pocket Book_, prepared by _Philip R. Björling_, if it does not contain everything, contains a great many facts and formulas concerning matters on which the mechanician is often called upon to seek immediate information, a considerable proportion of which are not easily subject to systematic classification. Among the one hundred and thirty formulas and processes are those relating to the flow and force of water and wind, the pressure of gases and the air, the weight, proportions, and strength of parts of machinery; stresses, rate of delivery of elevators, etc., gauges, tables of areas and circumferences, squares, cubes, fourth and fifth powers and roots, and items which can be indicated only by viewing them in detail. It is a valuable and indispensable companion for the mechanical engineer. The Macmillan Company. Price, $1.75.

* * * * *

_M. J. Costantin_ conceives that science consists in something more than the mere accumulation, description, and classification of facts, with which too many persons confound it, and that the important thing is what the facts teach, and, as related to it or as what may help to find it out, the theories that may be deduced from them. He applies this principle to the evolution of plant life in his book _Les Végétaux et les Milieux Cosmiques_ (Plants and Cosmic Media)--adaptative evolution, which is essentially a study of the operation of the various material factors of the environment on growth and development. "Guided by Goethe's ideas, he invites us to witness the incessant variations of organized existence everywhere visible in Nature," under the influence of cold and heat, light, gravity, and the aquatic medium, hoping in these studies to find new and decisive arguments in favor of transformist conceptions. He aims to show how the new characteristics produced by changes in the influence of these factors to which plants are subjected may be fixed and gradually become hereditary. (Published by Félix Alcan, Paris, in the _Bibliothèque Scientifique Internationale_.)

* * * * *

Mr. _A. G. Elliot's_ little work on _Industrial Electricity_--a translation and adaptation from the French of Henry D. Graffigny--is the first and introductory volume of an electro-mechanical series published by Whittaker & Co., London, and the Macmillan Company, New York. The editor, in introducing the volumes, expresses the belief that there is room for them because they explain in very clear and non-mathematical language the many and various applications of electricity. Many thousand copies of the original French editions have been sold. The present volume is divided into short chapters, each dealing with a separate branch of practical electricity-its nature, the units, magnetism and induction, practical measurement, chemical generators, accumulators, dynamo-electric machinery, electric light, electricity as a motive power, electric chemistry and electro-plating, bells and telephones, and telegraphs. In the succeeding volumes of the series the more important branches of the subjects touched upon here will be treated separately and in detail.

* * * * *

_Franklin Story Conant_ was born in Boston in 1870; was educated in the public schools of New England, at the University of South Carolina, and at Williams College; and was a Doctor of Philosophy, Fellow, and Adam T. Bruce Fellow in Johns Hopkins University. He showed great appetency for biological investigation and devoted himself to it, at Baltimore, Beaufort, N. C., Wood's Hole, and in Jamaica. He published a few papers of mark, and would have published many more if he had lived. He went to Jamaica in June, 1897, to continue his investigations, and worked for nearly three months on the development and on the physiology of the sense organs of the _Cubomedusæ_. After the death of the director of the expedition, Dr. J. E. Humphrey, he took the burden upon himself, and labored faithfully till he contracted yellow fever; returned to Boston, and died there September 13, 1897. His associates of Johns Hopkins University have published as a memorial volume of him his dissertation on _The Cubomedusæ_, which he presented at the examination for the degree of Doctor of Philosophy in June, 1897, accompanied by a brief notice of his life and a portrait.

* * * * *