20 INTRODUCTION. 



are aware, in any except closely related strains. 



Farquhar and Imperial* Both of these forms, 

 so far as we have been able to determine, are 

 merely vigorous strains of Marie Louise. 



Of other double varieties there may be men- 

 tioned Swanley White (pure white) and Madam 

 Millet (pink). Both of these are occasionally 

 grown, but there is no great demand for them 

 anywhere. 



ORIGIN AND INTRODUCTION OF VARIETIES. 



Single violets in this country are as yet in 

 comparatively little demand, and for this reason 

 Marie Louise and Campbell are the principal 

 varieties grown. There seems to be a growing 

 interest in singles, however, and on this account 

 and furthermore for the reason that the leaves are 

 exceedingly useful in bunching, it would be well 

 for every grower to devote a part of his space to 

 some vigorous-growing kind like California or 

 Princess of Wales. Six or seven hundred plants 

 of either of these varieties will, with good culti- 

 vation, give sufficient leaves for bunching the 

 .flowers from eight thousand Campbell or Louise. 

 In this way the foliage of the Campbell and 

 Louise is left to support the flowers a great advan- 

 tage in many ways. The California and Princess 

 of Wales, furthermore, will yield a sufficient num- 

 ber of flowers to well pay for the space devoted to 

 them, so that altogether it is an advantage to 

 have them. 



