ILLUSTRATIONS xiii 



Plate XXIV 



Thomas Andrew Knight 86 



Plate XXV 



Patrick Shirreff ill 



Plate XXVI 



D. A. Godron , 124 



Plate XXVII 



Charles Naudin 125 



Plate XXVIII 



Louis Leveque de Vilmorin 145 



Plate XXIX 



Henry Leveque de Vilmorin 146 



Plate XXX 



Henri Lecoq 152 



Plate XXXI 



C. F. von Gartner 165 



Plate XXXII 



Village of Calzv, in Wurtemberg^ home of C. F. von 

 Gartner 166 



Plate XXXUI 



Marketplace in Calzu 166 



Plate XXXIV 



Present site in Calzu of a portion of the former 

 experimental garden of C. F. von Gartner 167 



Plate XXXV 



Max Ernest Wichura 179 



Plate XXXVI 



Carl von Ndgeli 184 



