The third volume will be welcomed. Certainly there is no province in botany which more needs organization than ecology, and Dr. Cowles's work should fill a "long-felt want." W. L. E.

Standard Elocution and Speaker, by I. H. Brown. 275 pages, 14x20 cm., extra cloth, red edges. 1911. Laird & Lee, Chicago.

"This book is a practical treatise on the science and art of vocal expression, designed for schools, colleges, universities, and private pupils. It deals with the subject in so simple a manner that no student with average zeal and ability need experience difficulty in comprehending and applying its principles. Recognizing the justice of much that has been said against the tendency of popular reciters and declamers to run into the stilted, unnatural, and affected, the author insists upon reality, intelligence, and genuine human sympathy as the basis of all delivery. The work contains specific directions for respiratory exercises, gesture, facial expressions, pronunciation, voice and speech culture, extemporaneous speaking, and rules for public speaking. A valuable feature of the work, and one that renders it of practical importance in schools, is a collection of seventy-six drills in the pronunciation of English words often mispronounced. A synopsis of the book, compactly grouping its details under general heads, aids in grasping the subject as a whole. There are numerous appropriate illustrations and a choice collection of readings and recitals in both verse and prose. This work cannot fail to fill a longfelt want, because it is accurate, practical, and modern."

C. H. S.

Tables for the Determination of Minerals by Means of Their Physical Properties, Occurrences, and Associates, by Edward H. Kraus and Walter F. Hunt, University of Michigan. 254 pages, 16x24 cm. $2.00 net. McGraw-Hill Book Co., New York City.

A splendid book which will be welcomed by those interested in mineralogy who desire a comparatively quick method by means of which many of the minerals may be determined. The authors have made the keynote of the work one's ability to determine "quickly the distinctions between the physical properties, occurrences, and associates of the mineral which may be suggested by the luster, color, form, streak, and hardness, especially of a given specimen." The wide experience of the writers, in both the field and laboratory, has caused them to make the color and luster of minerals the basis of the finding tables; they include 250 of the most common minerals, which are divided into three groups as very common, common, and not common, as they say the display given to the name of a mineral indicates at a glance in which one of the three groups it has been placed.

There is a brief explanation of the terms used to describe the physical properties of the specimens. A glossary of seven pages is given which contains all terms used in the introduction and in the body of the work describing the minerals. An index is found in the back containing references to the minerals only, described in the tables. In the body of the text constant reference is made to such works as Dana, Kraus and Moses, and Parsons.

This work is undoubtedly the most valuable in print for the determination of minerals by their physical properties rather than by chemical means. It is mechanically well made and arranged, and is printed in clear ten point type. It should have a large sale among those interested in geology and minerology. C. H. S.

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J. W. A. YOUNG, Ph.D., Associate Professor of the Pedagogy of Mathematics,

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Please mention School Science and Mathematics when answering advertisements.

SCIENCE AND MATHEMATICS SOCIETIES.

Under this heading are published in the February, June, and October issues of the journal the names and officers of such societies as furnish us this information. We ask members to keep us informed as to any change in the officiary of their society. Names are dropped when they become a year old.

AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE.

President, Charles E. Bessey, University of Nebraska. Vice-Presidents— (A) Mathematics and Astronomy, E. B. Frost, Yerkes Observatory; (B) Physics, R. A. Millikan, University of Chicago; (C) Chemistry, F. K. Cameron, U. S. Department of Agriculture, Washington, D. C.; (D) Mechanical Science and Engineering, Chas. S. Howe, Case School of Applied Science; (E) Geology and Geography, Bohumil Shimek, Iowa City; (F) Zoology, II. F. Nachtrieb, University of Minnesota; (G) Botany, F. C. Newcomb, University of Michigan; (II) Anthropology and Psychology, G. T. Ladd, Yale University; (I) Social and Economic Science, Vacant; (K) Physiology and Experimental Medicine, W. T. Porter, Harvard University; (L) Education, E. L. Thorndike, Columbia University. Permanent Secretary, L. O. Howard, Smithsonian Institution, Washington, D. C. General Secretary, John Zeleny, University of Minnesota. Secretary of the Council, Theodore S. Palmer, Biological Survey, Washington, D. C. Secretaries of the Sections-(A) Mathematics and Astronomy, George A. Miller, University of Illinois, Urbana, Ill.; (B) Physics, A. D. Cole, Ohio State University, Columbus, O.; (C) Chemistry, C. H. Herty, University of North Carolina, Chapel Hill, N. C.; (D) Mechanical Science and Engineering, G. W. Bissell, Michigan Agricultural College, East Lansing, Mich. (E) Geology and Geography, F. P. Gulliver, Norwich, Conn.; (F) Zoology, Maurice A. Bigelow, Columbia University, New York, N. Y.; (G) Botany, H. C. Cowles, University of Chicago, Chicago, Ill.; (H) Anthropology and Psychology, George Grant MacCurdy, Yale University, New Haven, Conn.; (I) Social and Economic Science, Fred C. Croxton, 1429 New York Avenue, Washington, D. C.; (K) Physiology and Experimental Medicine, George T. Kemp, Hotel Beardsley, Champaign, Ill.; (L) Education, C. R. Mann, University of Chicago, Chicago, Ill. Treasurer, R. S. Woodward, Carnegie Institution, Washington, D. C. Assistant to Permanent Secretary, F. S. Hazard, Office of the A. A. A. S., Smithsonian Institution, Washington, D. C. Next meeting place, Washington, D. C. AMERICAN FEDERATION OF TEACHERS OF THE MATHEMATICAL AND NATURAL

SCIENCES.

Executive Committee: Chairman, C. R. Mann, University of Chicago; Secretary, Eugene R. Smith, Polytechnic Preparatory School, Brooklyn; Ira M. De Long, Boulder, Colo.; Wilhelm Segerblom, Phillips Exeter Academy, Exeter, N. H.; I. N. Mitchell, State Normal School, Milwaukee. AMERICAN NATURE-STUDY SOCIETY.

President, B. M. Davis, Miami University, Oxford, O.; Vice-Presidents, Stanley Coulter, F. L. Stevens, Gilbert H. Trafton, and F. L. Holtz. AMERICAN SOCIETY OF NATURALISTS.

President, Professor H. S. Jennings, Johns Hopkins University; VicePresident, Dr. George H. Shull, Carnegie Institution; Treasurer, Professor E. M. East, Bussey Institute; Secretary, Professor Charles R. Stockard, Cornell Medical School; Additional Members of the Executive Committee, Professor W. L. Tower, University of Chicago, and Dr. B. M. Davis, Cambridge, Mass.

ASSOCIATION OF AMERICAN GEOGRAPHERS.

President, Professor Ralph S. Tarr, Cornell University; First Vice-Presi dent, Alfred H. Brooks, United States Geological Survey; Second VicePresident, Henry G. Bryant, president of the Geographical Society of Philadelphia; Secretary, A. P. Brigham, Colgate University; Treasurer, Professor N. M. Fenneman, University of Cincinnati; Councilor (for three years), Professor Herbert E. Gregory, Yale University.

ASSOCIATION OF MATHEMATICS TEACHERS IN NEW ENGLAND.

President, Archibald V. Galbraith, Middlesex School, Concord, Mass.; Vice-President, George D. Olds, Amherst College, Amherst, Mass.; Secretary, Harry D. Gaylord, Harvard University, Cambridge, Mass.; Treasurer, Frank P. Morse, Revere High School, Revere, Mass.; Members of the Council, Bertha Carrol, Boston: Julien L. Coolidge, Harvard University; Dana P. Bartlett, Institute of Technology; Russell C. Lowell, Technical High School, Providence.

MANUFACTURERS OF

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All apparatus described in "An Introduction to Electricity," by Bruno Kolbe, published by Kegan Paul, Trench, Trübner and Co., Ltd., London, 43 Gerrard Street, Soho.

SPECIALITY: Acoustical Apparatus, such as pipes, tuning forks, syrens, and all other high precision instruments of this kind which were formerly supplied by Rud. Koenig, Paris, and Appunn, Hanau. **One of our college customers in the U. S. A. writes: "I am glad to be able to inform you that the tuning forks which you supplied for the Department of Psychology compare very favourably with ones previously obtained from Landry and Koenig and are possibly superior."

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Please mention School Science and Mathematics when answering advertisements.

ASSOCIATION OF OHIO TEACHERS OF MATHEMATICS AND SCIENCE.

President, William P. Holt, Central High School, Toledo; Vice-President, Ralph W. Buck, Stivers Manual Training School, Dayton; Secretary-Treasurer, Miss Harriet E. Glazier, Western College for Women, Oxford; Assistant Secretary, R. O. Austin, School of Commerce, Columbus.

ASSOCIATION OF TEACHERS OF MATHEMATICS IN THE MIDDLE STATES AND MARYLAND.

The officers for 1910-11 are: President, William Henry Metzler, Syracuse University, Syracuse, N. Y.; Vice-President, Philip R. Dean, Curtis High School, Staten Island, N. Y.; Secretary, Howard F. Hart, Montclair High School, Montclair, N. J.; Treasurer, Mrs. Clara H. Morris, High School for Girls, Philadelphia, Pa.; Council Members-Paul N. Peck, George Washington University, Washington, D. C.; Susan C. Lodge, Philadelphia Collegiate Institute, Philadelphia, Pa.; Eugene Randolph Smith, Polytechnic Preparatory School, Brooklyn, N. Y.; Isaac J. Schwatt, University of Pennsylvania, Philadelphia, Pa.; Clifford B. Upton, Teachers College, New York City; Fletcher Durrell, Lawrenceville School, Lawrenceville, N. J. CENTRAL ASSOCIATION OF SCIENCE AND MATHEMATICS TEACHERS.

Executive Committee-President, Herbert E. Cobb, Lewis Institute, Chicago, Ill.; Secretary-Treasurer, James F. Millis, Francis W. Parker School, 330 Webster Ave., Chicago, Ill.; Assistant Secretary-Treasurer, C. E. Spicer, Joliet Township High School, Joliet, Ill. Biology Chairman, Rousseau McClellan, Shortridge High School, Indianapolis; Vice-Chairman, F. C. Lucas, Englewood High School, Chicago; Secretary, Faith M. McAuley, High School, St. Charles, Ill. Chemistry-Chairman, Frank B. Wade, Shortridge High School, Indianapolis; Vice-Chairman, Howard W. Adams, State Normal School, Normal, Ill.; Secretary, Lillian Kurtz, Medill High School, Chicago. Earth Science-Chairman, D. C. Ridgley, State Normal School, Normal, Ill.; Vice-Chairman, George R. Mansfield, Northwestern University, Evanston, Ill.; Secretary, Grace Ellis, Central High School. Grand Rapids, Mich. Mathematics-Chairman, R. L. Short, Technical High School, Cleveland, O.; Vice-Chairman, Ira S. Condit, Iowa State Teachers' College, Cedar Falls, Ia.; Secretary, Marie E. Gugle, Central High School, Toledo, O. Physics-Chairman, H. L. Terry, State High School Inspector, Madison, Wis.; Vice-Chairman, V. D. Hawkins, Technical High School, Cleveland, O.; Secretary, Willis E. Tower, Englewood High School, Chicago. Annual Meeting, December 1, 2, 1911, Lewis Institute, Chicago.

COLORADO MATHEMATICS ASSOCIATION.

President, Saul Epsteen, University of Colorado, Boulder; SecretaryTreasurer, Grace E. Shoe, North Side High School, Denver.

EASTERN ASSOCIATION OF PHYSICS TEACHERS.

President, C. S. Griswold, Groton School, Groton, Mass.; Vice-President, Fred II. Cowan, Girls' Latin School, Boston; Secretary, Alfred M. Butler, East Boston High School, East Boston, Mass.; Treasurer, Percy S. Brayton, Medford High School, Medford, Mass.; Executive Committee, Fred R. Miller, English High School, Boston, Mass.; Frank M. Greenlaw, Cole's Laboratory, Newport, R. I.; Calvin H. Andrews, South High School, Worcester, Mass.

GEOLOGICAL SOCIETY OF AMERICA.

President, W. M. Davis, Cambridge, Mass.: First Vice-President, W. N. Rice, Middletown, Conn.; Second Vice-President, W. B. Scott, Princeton, N. J.; Secretary, Edmund Otis Hovey, New York City; Treasurer, William Bullock Clark, Baltimore, Md.: Editor, Joseph Stanley-Brown, Cold Spring Harbor, N. Y.; Librarian, H. P. Cushing, Cleveland, O.; Councilors (190911), G. O. Smith, II. S. Washington; (1910-12), J. B. Woodworth, C. S. Prosser; (1911-13), A. H. Purdue, Heinrich Ries.

ILLINOIS STATE ACADEMY OF SCIENCE.

President, W. A. Noyes, Illinois State University, Urbana, Ill.; VicePresident, J. C. Udden, Augustana College, Rock Island, Ill.; Secretary, Frank C. Baker, The Chicago Academy of Sciences, Chicago; Treasurer, J. C. Hessler, James Millikin University, Decatur, Ill.

INDIANA ACADEMY OF SCIENCE.

President, Charles R. Dryer, State Normal School: Vice-President, David W. Dennis, Earlham College; Secretary, Andrew J. Bigney, Moores Hill College; Assistant Secretary, E. A. Williamson: Press Secretary, Milo H. Stuart, Indianapolis Manual Training School: Treasurer, W. J. Moenhaus. State University; Editor, L. J. Rettger, State Normal School.