2\)6 XEW JERSEY AGRICULTURAL COLLEGE 



Plate VI. represents the base of a y^ hybrid plant with a wire 

 label attached, showing that the following line of breeding has 

 been carried out. The "Chinese" (25) fruits, of which are shown 

 at the lower right-hand corner, was bred upon the "Dwarf Purple" 

 (6) (shown at the lower left-hand corner). The "Black Snake" 

 (2) sample fruit at upper left-hand corner was bred to "Dwarf 

 Oval" (5) — pa-actically the same as (6). This last cross (2/5) 

 was bred upon the "Round White" (29), shown at upper right- 

 hand corner, while at the same time the "Dwarf Purple" was bred 

 upon the hybrid 25/6, giving the % hybrid 6//25/6. Last of 

 all these doiTble crosses were bred together as shown by the label 

 in the following formula, 2/5//29///6//25/6. As 25 is tlie only 

 "Chinese" and this is used but once, the amount of its "blood" is 

 one-eighth of the whole; that is, with the (6) it was first reduced to 

 a half, and with (6) again to a quarter, and then when this quarter 

 "blood" was bred upon by 2/5//29 (they being all "American") 

 the "Chinese" was reduced to one-eighth, or in other terms a % 

 "American" is represented in the plate. 



Plate VII. represents fruits of promising plants of the % hy- 

 brids. All are purplish at the marketable stage, shading to a dull 

 "russet orange" when mature. The fruit at 1 is the result of 

 uniting with the "Scarlet Chinese^' (25) the varieties "Black 

 Beauty" (4) and "Dwarf Purple" (6), the fractional record be- 

 ing 4///6//25/6. This meansi that "Chinese" was first crossed 

 upon "Dwarf Purple" and the following season the latter (6) was 

 bred with the Vo hybrid (25/6), giving the % hybrid (6//25/6). 

 The % hybrid" (4/7/6//25/6) obtained by further breeding 

 (1908) with the "Black Beauty" (4). The fruit in question has 

 the general form of (6) with an increased size due to the influence 

 of (4), while in length it has outstripped both parents. The fruits 

 at 2 and 3 of similar origin, were produced by the union last year 

 of the % hybrid (6//25/6) with the cross "Jersey Belle"-"Round 

 White" (10/29), expressed by the fraction 6//25/6///10/29. 

 They have lost the pear shape of (6), "Jersey Belle" and "Round 

 White" adding size and "plumpness." At 4 and 5 are shown re- 

 sults of combining the same hybrid (6//25/6) with the cross 

 "Striped" (21), "Dwarf Purple" (6), "K Y. Improved" (19), 

 the complete fractional record being 6//25/6///21//6/19. In 

 tliis instance "Dwarf Purple" is represented three times, its influ- 

 ence on form being well shown at 5. "Striped" resembles "Round 

 White" in shape, accounting in part for the resemblance of (4) to 



