ON TROPICAL FRUITS 
lemon, or vice versa, however widely the progeny 
may differ from the parent form within the limits 
of specific variation. 
ATTEMPTS TO Propuce A Harpy ORANGE 
My attempts to cultivate the citrus fruits date 
back about a quarter of a century. 
I pursued the investigation actively for a time, 
securing everything that was to be had, including 
the small Japanese variety called the Kumquat, 
Kimkan, or Kinkit, Citrus Japonica. This is a 
small, lime-like fruit produced in amazing abun- 
dance, having acid flesh but a skin with sweet, 
pleasant, orange flavor. 
Wild oranges were sent me also from Central 
Africa, Australia, and South America, and the best 
cultivated varieties from Burmah, Ceylon, and 
various less distant regions. 
The object primarily in view was the produc- 
tion of a hardy orange; one that would grow in 
northern California, and in regions of the eastern 
United States well to the north of the present 
limits of growth of this tender fruit. 
My experiments were promising at the outset, 
and I soon had a variety of hybrid seedlings. 
But there came a series of cold winters that 
destroyed the entire citrus orchard, and after one 
or two other tentative efforts, I was compelled to 
admit that my farms are located in a region un- 
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