140 



THE POPULAR SCIENCE MONTHLY. 



ties, and, although but a new-comer on our shores, already in Con- 

 necticut it appears in a variety fixed and well marked. Incipient 

 doubling is not uncommon, and now and then may be found a thalic- 

 trum or a saxifrage full-double. From the wild-strawberry [Fragaria 

 Virgiiiiana) has diverged a well-marked variety called the F. lUinoen- 

 sis. From this has diverged still another variety found by Mr. Gill- 

 man in great abundance on the shores of Lake Superior, far away 

 from the influence of the gardener — a variety of a variety. 



And now, as the visitation of insects, as more or less light, more 

 or less heat, more or less wind, more or less room, more or less soil, 

 are known to effect changes in the color, size, form, and even structure 



Watee-lilt— (2Vyw?/>^0Efl odorata). 



of ])lants, if the vegetal world has come to be what it is through 

 the action of these secondary causes, we should find reminiscences of 

 a primitive, undifferentiated type. 



