238 NEW JERSEY AGRICULTURAL COLLEGE 



represented %th of the "American" "blood." During 1910, 

 eighteen plants were grown of hybrids having only j^th of 

 the "Chinese," that is yfth "American." The following for- 

 mula represents one of these combinations, namely, 26////32- 

 ///6//25/6. Tracing back from the first union, 25/6, that is. 

 "Chinese" upon "Dwarf Purple," it is noted that the "Dwarf 

 Purple" was bred to the hybrid, giving 67/25/6, that is %th 

 "Dwarf Purple." To this derivative was bred as the pollinator, 

 the "Purple Tokio," which gave 32///6/25/6, or %th "Ameri- 

 can." To this %th, the "Ivory," a pure "American," was bred, 

 which, by the same method of determining the amount of each 

 parental species, begot ofiFspring carrying th of the "'Ameri- 

 can" eggplant. 



Sample fruits of this combination are shown in Plate IX where 

 one familiar with the parentage can see traces of the results of 

 the four combinations. No two plants of the block are alike 

 in the various characteristics that make up the two species thus 

 brought together. The comparatively few seeds located far 

 down toward the blossom-end, as shown in the sectional view 

 of a most seedy specimen (3), is a desirable feature, for in the 

 longer fruits (4) it is possible to get small slices nearly or quite 

 free from seeds. 



There is not much hope of getting rid of the prickles by this 

 union, but this end is quite possible along another line. 



LEAVES OF HYBRID EGGPLANTS. 



Plate X shows a set of leaves from young to full-sized of ( i ) 

 "Scarlet Chinese," (2) "New York Improved," and (3) of a 

 hybrid plant of the two. In the first, shown in the upper row 

 (1-4), the leaves approach the 7-lobed form with the lobes 

 pointed — quite in contrast with the round lobes of the "Ameri- 

 can" set at the bottom of the plate (8-10). The petiole and 

 main veins are purple and beset with stout prickles while the 

 surface of the blade is only slightly woolly. The "American" 

 variety has a very woolly blade with the framework free from 

 purple color and prickles. 



Between the two sets of parental leaves is photographed (5-7) 

 the set of the hybrid and the differences are not at first manifest 

 to the eye, but there is an "averaging up" of the differing char- 

 acteristics of the "American" and "Chinese" in that the lobes 

 are moderately i)ointed, the stout prickles are small and limited 

 to the mid-rib, while the purple is about half as pronounced as 

 in the "Chinese" and the woollv covering- is much less than in 



