334 Ever-sporting Varieties 



who wish to make pedigree-cultures. The co- 

 operation of many is needed to bring about any 

 notable advancement, since the best way to se- 

 cure isolation is to restrict one's self to the 

 culture of one strain, so as to avoid the inter- 

 mixture of others. So many facts remain doubt- 

 ful and open to investigation, that almost any 

 lot of purchased seed may become the starting- 

 point for interesting researches. Among these 

 the sulphur-yellow varieties should be consid- 

 ered in the first place. 



In respect to the great questions of heredity, 

 the stocks offer many points of interest. Some 

 of these features I will now trv to describe, in 

 order to show what still remains to be done, 

 and in what manner tlie stocks mav clear the 

 way for the study of the ever-sporting varieties. 



The first point, is the question, which seeds 

 become double-flowered and which single-flow- 

 ered plants! Beyond all doubt, the determi- 

 nation has taken place before the ripening of the 

 seed. But though the color of the seed is often 

 indicative of the color of the flowers, as in some 

 red or purple varieties, and though in balsams 

 and some other instances the most ^^ highly 

 doubled " flowers are to be obtained from the 

 biggest and plumpest seeds, no such rule seems 

 to exist respecting the double stocks. Now 

 if one half of the seeds gives doubles, and 



