APPENDIX. 137 



might be set. or allowed to establish themselves from 

 the runners, between the old rows, which can then be 

 turned under with the spade, and will serve to enrich 

 the ground. 



Kow^ as to varieties. On this point there is room 

 for a great diversity of opinion, and we cannot hope to 

 name a list that will be acceptable to a very large num- 

 ber of persons, at least in many parts of the country. 

 Planters must have recourse to the best experience to 

 be found in their respective localities ; in the mean time 

 we shall express our opinion of a few varieties, and let 

 it go for what it is worth. 



It happens that in this country the greater number 

 of our most productive varieties have but one set of 

 the organs of fecundation. A fruitful flower must 

 have both pistils and stamens perfectly developed. 

 The stamens are regarded as the male organs, and the 

 pistils the female. When a flower has well-developed 

 pistils, but no stamens, or imperfect ones, it must be 

 impregnated by pollen from other flowers. Where a 

 flower has no pistils, or has imperfect ones, it is utterly 

 barren. A large number of our best American vari- 

 eties — such as Hovey^s Seedling^ Burros Neiv Pine^ 

 IfcAvoy^s Superior^ Moyamensing, &c. — are wanting in 

 stamens, and therefore foreign impregnation is neces- 

 sary. In Europe this distinction is not observed to 

 any extent, and all the English and continental varie- 



