INTRODUCTION 



pansy, the English violet, and the various blue, white, and 

 yellow violets. Genera are grouped into orders on account 

 of resemblances, and orders under still larger divisions, etc. ; 

 but the genus, species, and individual are all the beginner 

 need trouble about, at least as far as the present work is 

 concerned. When systematic work is taken up, the scheme 

 of arrangement of the different subdivisions will gradually 

 unfold itself. 



