SCIENCE— ADVERTISEMENTS 



GENERAL CHEMISTRY 



By Harry N. Holmes, Professor of Chemistry at Oberlin College. Cloth, 

 octavo, 558 pages, $3.50. 



A new text presenting the student's viewpoint, simple, clear tlieory, fascinating applica- 

 tions, maximum teaching aids. Published September 17, the book is already a success. It is 

 being used at Yale University, Earlham College, Southwestern University, Whitman College, 

 Rensselaer Polytechnic Institute, Hiram College, and Oberlin College. 



LABORATORY MANUAL OF GENERAL CHEMISTRY 



By Harry N. Holmes. Cloth, octavo, 115 text pages, no blank pages, 



$1.60. 

 Laboratory exercises to accompany Professor Holmes' excellent text-book, "General 

 Chemistry". 



QUANTITATIVE CHEMICAL ANALYSIS. Sixth Edition 



By Henry P. Talbot, Professor of Inorganic Chemistry at the Massachu- 

 setts Institute of Technology. Cloth, octavo, 203 pages, $2.25. 



The sixth edition is a complete rewriting of Professor Talbot's textbook, which in its earlier 

 editions has been used throughout the country. The book has been entirely reset and greatly 

 improved typographically. At every point the book makes use of the most recent and author- 

 itative research in quantitative analysis. 



QUANTITATIVE ANALYSIS. Revised Edition 



By George McPhail Smith, Professor of Chemistry in the University of 

 Washington. Cloth, octavo, 218 pages, $2.25. 



In revising this book the author has provided entirely new introductory matter, and has 

 rearranged and changed the procedures in such a way as to adapt the book more completely than 

 before to the needs of college course in the subject. 



MATHEMATICS FOR STUDENTS OF AGRICULTURE 



By S. E. Rasor, Professor of Mathematics in Ohio State University. Edited 

 by E. R. Hedrick. Cloth, i2mo, 290 pages, $3.00. 



The application of mathematics to agriculture has been stressed throughout this elemen- 

 tary text for college students. Essential principles and appropriate problems in those aspects of 

 algebra and trigonometry which are needed in the scientific and practical work of the agricultural 

 student are included. The unifying element in the book is the attempt to make the principles 

 of arithmetic, algebra, geometry, trigonometry, and graphic representation function with the 

 students' interest and point of view. 



DESCRIPTIVE GEOMETRY 



By George Young, Jr., Professor of Architecture, and H. E. Baxter, 

 Assistant Professor of Architecture, in Cornell University. Cloth, 

 i2mo, 310 pages, $3.25. Engineering Science Series. Edited by E. R. 

 Hedrick and D. C. Jackson. 



The new text covers the standard problems and includes, in addition, chapters on "Curved 

 Lines," "Shades and Shadows," and "Oblique Projections." The emphasis is placed on the 

 theoretical aspects, but each chapter is introduced by a section explaining the use of the principles 

 in engineering practice, and there are later chapters devoted entirely to applications. The use of 

 cuts instead of definitions increases the student's power of visualization. 



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