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MITOSIS AND FISSION IN THE 

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WITH A DISCUSSION OF THE METHOD 



OF ORIGIN OF BILATERAL SYMMETRY IN 



THE POLYMASTIGOTE FLAGELLATA 



34 pages, i plates, 11 figures in tert, 50 cents 



University of California Press 



BERKELEY, CALIFORNIA 



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38 Illustrations. Cloth, $7.00. By E. L. 



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Translation by Peof. Masius (Worcester) 

 CHEMICAL REACTIONS and their 

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Cloth, $r.7S. By Prof. I. W. D. Hackh 



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 ORGANIC CHEMISTRY (English Edition) 



Newly Translated and Revised. 



Vol. I— The Aliphatic Series. Cloth, 87.00. 



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By Prof. V. Von Richter (Breslau) 

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TEXTBOOK of ORGANIC CHEMISTRY 

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PHYSICS and CHEMISTRY of COLLOIDS 

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P. BLAKISTON'S SON & CO., Phila. 



Mathematical Philosophy 



A Study of Fate and Freedom 



By CASSIUS J. KEYSER, Ph. D., LL.D. 



Adrain Professor of Mathematics, 



Colunibia University 



These "lectures for educated laymen" aim at 

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 show that the greatest of mathematical ideas — the 

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 sociology or art or natural science and for all 

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 the standards and the bearings of the science 

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Price, $4.70 



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Marine Biological Laboratory 



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INVESTIGATION Facilities for research in Zooloer, 



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INSTRUCTION Courses of laboratory instruction 



with lectures are offered in Inverte- 



^""" !* ,*^,^"«"^' b;;oiogy,°°Xior;gr^rnd^^Mo^"h: 



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Each course requires the full time 

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