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JUST OUT 



The Free-Living 

 Unarmored Dinoflagellata 



KOFOID AND SWEZY 



S62 quarto pages; 12 colored plates and 388 



figures in text. Paper, $12.50. 



Carriage extra, weight 7 lbs. 



A monumental work on these elusive organisms, 

 based on years of observation off the coast of Cal- 

 ifornia, in the Eastern Tropical Pacific, and in the 

 plankton traverse of the Northern and Western 

 Pacific and Indian oceans. 



The work sets forth a summary of present know- 

 ledge, makes clear the causes of discolored seas 

 and phosphorescence of ocean waters, and offers 

 new conceptions of the relationships of genera 

 within the group. 



The University of California Press 



Berkeley, California 



19 East 47tli Street, New York 



Just Published 



McPherson and Henderson's 

 Laboratory Manual 



For General Chemistry, 2d Edition 



A revision of the Manual neces- 

 sitated by the new edition of 



General Chemistry 



Second^Edition 



A book which is known in every sec- 

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 the actual class conditions in the 

 colleges. The second edition has been 

 largely rewritten in view of the ad- 

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 last few years. 



GINN AND COMPANY 



70 Fifth Avenue, Ne-w York 



Successful Wiley Texts in Biological Sciences 



Botany, With Agricultural AppUcations. 



Second Edition. By John N. Martin, 



Professor of Agriculture, Iowa State 



College. 



For elementary courses in botany. The 



chapters are separately understandable, 



making possible a selection of topics according 



to the needs of each course. 



604 pages. 5I by 85. 490 figures. Cloth, 

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Animal Parasites and Human Diseases. 



By Asa C. Chandler, M.S., Ph.D., In' 

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570 pages. 6 by 9. 254 figures. Cloth, 

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Insect Pests of Farm, Garden and Orchard. 

 Second Edition. By E. Dwight San- 

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 L. M. Peairs, Professor of Entomology, 

 West Virginia University. 

 Several new articles, three new chapters 



and other changes bring this book up to date. 

 707 pages. 5i by 8. 604 figures. Cloth, 



S4-50- 



Laboratory Manual in General Microbiology. 



Second Edition. By the Laboratory of 

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 Agricultural College, Ward Giltner, Head. 



Prepares the student for specialization in 

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471 pages. 5I by 7|. 77 figures. Cloth, 

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We will gladly send you these or any other Wiley books on Free Examination, subject to 

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