38 HISTORY OF PHYTOPATHOLOGY 



field of botany, but more especially plant physiology 

 (Ratzenburg, 1843). 



Meyen's book on Plant Pathology^ which appeared 

 the year following his death is, next to Unger's Exan- 

 theme der Pflanzen, the most important contribution 

 of this period. This work was intended to constitute 

 the final contribution to a series of works by the author 



Franz Julius Meyen. 

 (From an engraving in the Kaathoven collection. Courtesy of the 

 Library of the U. S. Surgeon General's Office.) 



on botany, of which his three-volume work on Neuen 

 System der Pflanzen-Physiologie is the most remarkable 

 and important. It was to consist of two volumes, the 

 second to be on teratology, and was to appear under the 

 general title of Handbuch der Pflanzen-Pathologie und 



'Meyen, F. J. F.: Pflanzen-Pathologie. Lehre von dem kranken 

 Leben und Bilden der Pflanzen, pp. I-XII + 1-330, Berlin, 1841. 



