Crucible lid on flat cork. Taper. BOOKS OF REFERENCE WATTS. Dictionary of Chemistry (Morley and Muir), 4 vols. Longmans, Green & Company. THORPE. Dictionary of Applied Chemistry, 3 vols. Longmans, Green & Company. ROSCOE and SCHORLEMMER. Treatise on Chemistry, 7 vols. (Inor ganic portion, 2 vols.) D. Appleton & Company. RAMSAY. Inorganic Chemistry. P. Blakiston, Son & Company. REMSEN. Inorganic Chemistry (Advanced). Henry Holt & Com pany. RICHTER (SMITH). Inorganic Chemistry. P. Blakiston, Son & Company. MENDELÉEFF. Principles of Chemistry. Longmans, Green & Com pany. OSTWALD. Outlines of General Chemistry. Macmillan Company. WALKER. Introduction to Physical Chemistry. Macmillan Com pany. TILDEN. Introduction to Chemical Philosophy. Longmans, Green & Company. DOBBIN and WALKER. Chemical Theory for Beginners. Macmillan Company. COOKE. The New Chemistry. D. Appleton & Company. LOTHAR MEYER. Modern Theories of Chemistry. Longmans, Green & Company. MUIR. Principles of Chemistry. VON MEYER. History of Chemistry. Macmillan Company. pany. SADTLER. Handbook of Industrial Organic Chemistry. J. B. Lippincott Company. NEWTH. Chemical Section Experiments. Longmans, Green & Company. EMERGENCIES Teachers of chemistry have a heavy responsibility in guarding against serious accident by close and constant oversight of students' work. Minor accidents, such as slight burns and cuts with glass, are likely to occur, and it is recommended that some simple materials be kept on hand for use in emergency court-plaster, clean cotton, mus lin, and twine for bandaging: for burns, sodium bicarbonate, vaseline, and emulsion of lime-water and sweet oil. The last is especially effective, and should be applied liberally to the burned surface to protect it from the air. In the case of acid burns, treatment with dilute alkali carbonate or hydroxide should come first. Acid fumes, if inhaled, should be counteracted by cautiously inhaling ammonia. The irritation from inhaling chlorine is relieved by alcohol fumes. TWENTIETH CENTURY TEXT-BOOKS. The closing years of the nineteenth century witnessed a remarkable awakening of interest in American educational problems. There has been elaborate discussion in every part of our land on the co-ordination of studies, the balancing of contending elements in school programmes, the professional training of teachers, the proper age of pupils at different stages of study, the elimination of pedantic and lifeless methods of teaching, the improvement of textbooks, uniformity of college-entrance requirements, and other questions of like character. In order to meet the new demands of the country along these higher planes of educational work, the Twentieth Century Text-Books have been prepared. At every step in the planning of the series care has been taken to secure the best educational advice, in order that the books may really meet the increasing demand from academies, high schools, and colleges for text-books that shall be pedagogically suitable for teachers and pupils, sound in modern scholarship, and adequate for college preparation. The editors and the respective authors have been chosen with reference to their qualifications for the special work assigned to them. These qualifications are: First, that the author should have a thorough knowledge of his subject in its latest developments, especially in the light of recent educational discussions; second, that he should be able to determine the relative importance of the subjects to be treated in a text-book; third, that he should know how to present properly his topics to the ordinary student. The general editorial supervision of the series is in the hands of Dr. A. F. Nightingale, Superintendent of High Schools, Chicago, with whom is associated an advisory committee composed of an expert in each department of study. The offer of a complete series of text-books for these higher grades of schools, issued under auspices so favorable, is an event worthy of the twentieth century, and a good omen for the educational welfare of the future. One hundred volumes are comprised in the series. A list of those now ready, and of others in preparation, will be sent upon request. D. APPLETON AND COMPANY, NEW YORK. TWENTIETH CENTURY TEXT-BOOKS. Uniform, 12mo. NOW READY. Botanical Text-Books by JOHN MERLE COULTER, A. M., Ph. D., Head of Department of Botany, University of Chicago: Plant Relations. A First Book of Botany. Cloth, $1.10. Plant Structures. A Second Book of Botany. Cloth, $1.20. Plant Studies. An Elementary Botany. Cloth, $1.25. Plants. A Text-Book of Botany. Cloth, $1.80. Key to Some of the Common Flora. Limp cloth, 60 cents. A History of the American Nation. By Andrew C. MCLAUGHLIN, A. M., LL. B. Cloth, $1.40. English Texts. For College Entrance Requirements. Carefully edited. Per volume, cloth, 50 cents; boards, 40 cents. Animal Life. A First Book of Zoology. By DAVID S. JORDAN, M. S., M. D., Ph. D., LL. D., and VERNON L. KELLOGG, M. S. Cloth, $1.20. The Elements of Physics. By C. HANFORD HENDERSON, Ph. D., and JOHN F. WOODHULL, A. M., Ph. D. Cloth, $1.10. With Experiments, $1.25. Physical Experiments. A Laboratory Manual. By JOHN F. WOODHULL, Ph. D., and M. B. VAN ARSDALE. Cloth, with blank pages, 60 cents. Without blank pages, limp cloth, 45 cents. The Elementary Principles of Chemistry. ABRAM VAN EPS YOUNG, Ph. B. Cloth. By A Text-Book of Geology. By ALBERT PERRY BRIGHAM, A. M. Cloth, $1.40. A Text-Book of Astronomy. By GEORGE C. COMSTOCK, Ph. B., LL. B. Cloth, $1.25. A German Reader. By H. P. JONES, Ph. D. Cloth, $1.00. OTHERS IN PREPARATION. Send for complete Prospectus of the Twentieth Century Text-Books for High Schools. D. APPLETON AND COMPANY, NEW YORK. TWENTIETH CENTURY TEXT-BOOKS. Plant Relations. A First Book of Botany. By JOHN M. COULTER, A. M., Ph. D., Head of Department of Botany, University of Chicago. 12mo. Cloth, $1.10 net. "Plant Relations' is charming both in matter and style. The book is superbly manufactured, letterpress and illustration yielding the fullest measure of delight from every page."— W. McK. Vance, Superintendent of Schools, Urbana, Ohio. "I am extremely pleased with the text-book, 'Plant Relations.'”—H. W. Conn, Wesleyan University, Middletown, Conn. "Dr. Coulter's Plant Relations,' a first text-book of botany, is a wholly admirable work. Both in plan and in structure it is a modern and scientific book. It is heartily recommended."- Educational Review. "It is a really beautiful book, the illustrations being in many cases simply exquisite, and is written in the clear, direct, and simple style that the author knows so well how to use. A very strong feature of the work is the prominence given to ecological relations, which I agree with Dr. Coulter should be made the leading subject of study in the botany of the preparatory schools.". V. M. Spalding, University of Michigan. "We can hardly conceive of a wiser way to introduce the pupil to the fascinating study of botany than the one indicated in this book."-Education. "The book is a marvel of clearness and simplicity of expression, and that, too, without any sacrifice of scientific accuracy."-School Review. "It marks the passage of the pioneer stage in botanical work, and affords the student a glimpse of a field of inquiry higher than the mere tabulation and classification of facts."-C. H. Gordon, Superintendent of Schools, Lincoln, Neb. "It will surely be a Godsend for those high-school teachers who are struggling with insufficient laboratory equipment, and certainly presents the most readable account of plants of any single elementary book I have seen.”—L. M. Underwood, Columbia University. "We heartily recommend his book as one of the clearest and simplest presentations of plant relations that we have seen."-Independent. D. APPLETON AND COMPANY, NEW YORK. |