SCIENCE. 



[Vol. XVI. No. 393 



WARREN'S NEW PHYSICAL GEOGRAPHY. 



THE publishers have the pleasure of announcing that the new edition of this popular text book, which has been for a long time in prepa- 

 ration, is now in readiness. 



Warren's Physical Geography was the first treatise on this subject, for School use, published in this country, and for many years 

 has been the accepted Standard among teachers in all parts of the United States. With the rapid advance of modern science, however^ 

 old ideas are continually changing, time- honored theories are found to be untenable in the light of new discoveries, and constant addi- 

 tions are being made to our fund of knowledge. 



Under these conditions it has been considered advisable to prepare an entirely new book in which the common phenomena of the 

 physical world are presented in the light of recent scientific investigation. . The aim of the work is to discuss in a popular and elementary 

 style the various physical features of the earth, its astronomical environment, its geological structure, the character of its land-surface, 

 the nature and movements of the water and of the atmosphere, and their relations to and influence upon one another, as well as their 

 combined effect upon the different forms of organic life. 



The subject matter has been prepared under the direction of Professor William H. Brewer, of Yale University, assisted by several 

 well-known Scientists and Educators whose suggestions and advice have contributed materially to the accuracy and completeness of the 

 work. 



The book contains twenty-four pages of colored maps, which embody the latest researches of experts in the various departments 

 of physical science. Included in these is an elaborate geological map of the United States, the first of the kind ever published in a school 

 text book, prepared under the supervision of Major J. W. Powell, Director of the United States Geological Survey. A series of relief 

 maps, reproduced with great care from moulds made especially for this work, will be found useful in securing a correct idea of the 

 surface structure of the various land masses. 



The statements of the text are fTirther elucidated by many additional maps and numerous diagrams, as well as by a variety of 

 pictorial illustrations, the work of eminent artists and engravers, valuable not only on account of their artistic merit, but also as prac- 

 tical educational aids. 



The work forms a large quarto of 144 pages, substantially bound in cloth. Price, $1.50 



A Sample copy will be forwarded, postage paid, on receipt of price. Specimen pages mailed on application to the publishers.. 



Cowperthwait & Co., Philadelphia, Pa. 





GoodeGBrown «^J«<«' 



O.K. ANDERSON, 



30 Hanover St., Boston, Mass. 

 Circulars free. - - Mention this paper. 



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 stating condition, edition, etc., to Science Book 

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JOURNAL OF MICROSCOPY AND 

 NATURAL SCIENCE: 



THE JOURNAL OF 



The Postal Microscopical 

 Society. 



EDITED BY 



ALFRED ALLEN and WILLIAM 

 SPIERS, M.A., F.G.S., Etc. 



$1.75 Per Year. 



CONTENTS OF JULY NUMBER. 

 Bacteria; a Study in Biology. 

 The New Apochromatic Lens. 

 Our British Plants. 



Microscopic Fauna of Kennett and Avon Canal 

 Intelligence of Ants. 



On the Presence of a Tarsal Comb in Spiders. 

 Paper. 



The Trees of the Wood. I.— Beech. 

 Colorless Preparations of Plants. 

 Dips into my Aquarium. 

 Differential Staining of Saccaromyces. 

 Among the Fylde Flowers — The Woodlands. 

 Pencil for Writing on Glass. 

 Aspect of the Heavens. 

 Paste for Mounting Botanical Specimens. 

 The Pine Destroyer. 

 Wesley Naturalists' Society. 

 Reviews. 



H. D. C. HODGES, 47 Lafayette Place, H.L 



