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I. On Streblomastiz strix, a Polymastigote 

 Flagellate with a Linear Plasmodial 

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II. On Trichomitus termUidis, a Polymasti- 

 gote Flagellate with a Highly Developed 

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III. On Trichonympha campanula Sp. Nov. .75 



IV. On Leidyopsis sphaerica. Gen. Nov., 



Sp. Nov. 25 



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HAVING A MEMARKABLE SALE AS 



A text t90ok for courses in Heredity and Eugenics ; 

 of special appeal also to general readers 



BEING WELL BORN 



By MICMAEI. F. GIJYEM 



Professor of Zoology, Univeridty of Wisconsin 



H. 31. Benedict, Professor of Botany, University of Cincinnati. "It is the richest in meat of the books on 

 Heredity and the best arranged for teaching." 



David Starr Jordan, Chancellor Leland Stanford Jr. University. "A remarkably full and accurate state- 

 ment of what we really know of the science of eugenics and its application to human life." 

 G. S. Parker, Zoological Laboratory, Harvard University, " Decidedly the best of American te-xts on 

 eugenics." 



E. A. Moss, Professor of Sociology, University of Wisconsin. "There is no book on eugenics I shall so freely 

 recommend to enquirers as Professor Guyer's. I wish that the volume could be widely circulated, for, to 

 the eugenics questions that thoughtful people are asking, it gives the best answers possible in the present 

 state of our knowledge." 



JS. G. Conklin, Professor of Biology, Princeton University. "Just such a statement of the scientific facts 

 underlying heredity and eugenics, and of the legitimate conclusions which may be drawn from those facts, 

 as was to be expected from a man of Professor Guyer's high scientific standing." 



Henry Baldwin, Ward, Professor of Zoology, University of Illinois. ' ' Professor Guy er has a pleasant and 

 lucid style which appeals to the reader ; he is also so well versed in the subject that his utterances may be 

 accepted as authoritative." 



Henry S. Pratt, Professor of Zoology, Haverford College. "As a piece of popular exposition it is a remark- 

 able accomplishment. What is said about sex-hygiene has my especial commendation." 



TJie 11 iiblishe 



12mo. Cloth, $1.50 net 

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