Articles of Special Interest to Botanists 



In THE MONIST, January 1906 - - - - $ .60 



HEREDITY AND THE ORIGIN OF SPECIES (Illustrated) 

 By Daniel T. MacDougal, 



In THE MONIST, April 1906 $ .60 



THE EXPERIMENTAL DATA OF THE MUTATION THEORY 

 • By J. Arthur Harris, Ph. D. 



In THE OPEN COURT, November 1906 - S . 10 



BURBANKS PRODUCTION OF HORTICULTURAL NOVELTIES 



By Prof. Hugo De Vries. 



THE OPEN COURT, December 1906 $ . 10 



Will contain A BIOGRAPHICAL SKETCH OF PROF. 



HUGO DE VRIES AND HIS WORK 



By Prof. H. Hus. 



These numbers will be supplied on receipt of price. 



The publishers of THE OPEN COURT and THE MONIST have 

 in preparation a new work by Prof. Hugo De Vries entitled PLANT 

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THE OPEN COURT PUBLISHINQ CO. 1322 Wabash Ave., Chicago, U. S. A. 



THE BEST WORKS ON FERNS 



OUR FERNS IN THEIR HAUNTS, by Willard N. Clute. Octavo, 333 

 pages. 225 illustrations. Eight cclored plates. Contains the only il- 

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 Price post paid, $2.50. 



THE FERN ALLIES OF NORTH AMERICA, by Willard N. Clute. 

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 Listed in the New York State Library list among The Best Books of 

 1905. Price post paid, $2.00. 



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