AMERICAN HOME GARDEN. 81 



the same time ; and it is probably from blooming a little out 

 of the ordinary season that certain kinds of peaches, and per- 

 haps also apples, often or constantly reproduce seedlings like 

 themselves. The several sub-varieties of the Newtown pippin 

 apple, -and other valuable fruits, sometimes attributed to soil, 

 etc., are probably the results of exclusive and perfect self-fer- 

 tilization in isolated blossoms. 



New varieties are not unfrequently obtained by TRANSFER 

 to a different climate. In a period more or less prolonged, the 

 plant becomes acclimated, and its habit fixed in conformity 

 with its new circumstances, and on being returned to its for- 

 mer latitude it can not be identified as one with the variety 

 from which it sprang. The early Canada pea is an instance 

 of this, being the early frame pea raised for a series of years 

 in Canada. 



The effect is precisely analogous to that induced without 

 change of climate by taking only the very first formed pods 

 for seed. The maturing of the crop is hastened, but its size 

 and yield somewhat reduced. 



Transfer to a southern climate tends, of course, in the oppo- 

 site direction. All this, however, would be greatly affected by 

 the absolute natural fitness or unfitness of the climate to pro- 

 duce the crop which it is sought to change. 



New varieties are occasionally produced by DISEASE, which 

 becomes hereditary, but of these it is not worth while to speak. 



They are also often INTRODUCED from foreign countries, 

 either by scientific research or under the stimulus of interest. 

 The cocoanut squash (noted in its place) was introduced from 

 Valparaiso by the late Commodore Porter ; and the common 

 large white kidney bush-bean, which now abounds in our 

 stores and markets, was brought into New York from Madeira 

 some thirty years ago, when dumpling beans were scarce. At 

 that time it furnished the text for a free-trade article in the 

 New York Journal of Commerce, which indicated clearly that 

 the writer " knew beans." 



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