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JUST OUT 



The Free-Living 

 Unarmored Dinoflagellata 



BY 



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. 



fhe University of California Press 



Berktlcy, Califonia 



19 Eait 47tli Street, New York 



JENSEN 

 DAIRY BACTERIOLOGY 



A New, Practical Guide for all Dairy and 

 Milk Products Technicians. 70 Illustrations, 

 xii -1- 180 pp. Cloth, $3.00. 



CHAMBERLAIN. Textbook of Organic 

 Chemistry, xliii + 959 pages. Cloth, 

 $4.00. By Joseph P. Chamberlain, Ph.D. 

 (Mass. Agric. Coll.). 



HAMPSHIRE. Volumetric Analysis. 3d 

 Edition. Cloth, $1.75. By C. H. Hamp- 

 shire, Sc.B. (London). 



HACKH. Chemical Reactions and Their 

 Equations. Cloth, $1.75. By Ingo W. D. 

 Hackh, Ph.C. (San Francisco). 



ROUGIER. Philosophy and the New Phys- 

 ics. XV 4- 159 pages. Cloth, $1.75. . By 

 Louis Rougier (Paris). Translation by 

 Morton Masius, Ph.D. (Worcester). 



BOOTH. Radiant Energy and the Ophthal- 

 mic Lens. 230 Illustrations, xxvii + 226 

 pages. Cloth, S2.25. By Frederick Booth, 

 Introduction by Whitefield Bowers, M.D. 

 (Indiana). 



P. BLAKISTON'S SON & CO., 

 Publishers : : : Philadelphia 



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