PUBLICATIONS OF THE CAMBRIDGE 



UNIVERSITY PRESS 



The University of Chicago Press has become the American 

 agent for the scientific journals and the following books issued 

 by the Cambridge University Press of England: 



BOOKS 



Royal Society of London : Catalogue of Scientific Papers, 



/ 800- 1900. 



I. Catalogue of Authors {1800-1883). Twelve volumes. Cloth 

 or half morocco. Prices on request. 



//. Catalogue of Authors {1884-1 900). Volume XIII. A and B. 



III. Subject Index. Three volumes. Buckram or half pigskin. Prices 



on request. 



Tables for Statisticians and Biometricians. Edited by Karl Pearson. 



228 pages, quarto, bound in boards; $2.50, postpaid 



North Manchurian Plague Prevention Service. Reports (1911- 



19 13). Edited by Wu Lien-Teh (G. L. Tuck). 



294 pages, royal' 8vo, paper; $2.75, postpaid 



The Genus Iris. By William Rickatson Dykes. With Forty- 

 eight Colored Plates and Thirty Line Drawings in the Text. 



246 pages, demi-folio, half morocco; $37.50, postage extra (weight 11 lbs. 9 oz.) 



This magnificent work brings together the available infor- 

 mation on all the known species of Iris. The account of 

 each includes references to it in botanical literature and a 

 full description of the plant, together with observations on its 

 peculiarities, its position in the genus, its value as a garden 

 plant, and its cultivation. As far as possible the account of the 

 distribution of each species is based on the results of research in 

 the herbaria of Kew, the British Museum, the Botanic Gardens 

 of Oxford, Cambridge, Berlin, Paris, Vienna, and St. Petersburg, 

 and the United States National Museum at Washington. 



The most striking feature of the book is the forty-eight life- 

 size colored plates, reproduced from originals drawn from living 

 plants — making it a volume of remarkable beauty as well as of 

 great scientific importance. 



The American Florist. Lovers of irises owe a huge debt of gratitude to 

 William Rickatson Dykes, who after years of labor has produced a 



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