17 



jilM)ut S t\'('t <) iiu'lii's. It should \)v stiiU'd. li()\V('\ n-, tluit tlu' Cuzco 

 ^Tovvii iind used for comparison, owing* to tlic long season rtM|uinHl 

 for its devolopiiu'nt, was planted in the greenhouse earlier than tlu^, 

 other races and transplanted to the field when the other eoi-n was 

 planted. It appeared to have been stunted somewhat in this process 

 of transplanting and probabl}- did not grow as large as it otherwise, 

 would have done. It will l)e seen from these figures that the hybrids 

 greatly exceeded either parent in size and vigor, l)eing taller than 

 either parent ))y an average of a))out 1^ feet. 



An exceedingly interesting feature of the hybrids was their Ijite- 

 ness. Those wdiich resembled the female ])arent, Hickory King, 

 entirely, and were probably the results of accidental self-fertilization 

 and not true hj^brids, pushed out their silks ready for pollination the 

 latter part of Julv and tirst of August. Quite a number of these were 

 inbred, the work ))eing done between August 1 and 15. Of those 

 inbred seventeen matured, and the ears, while in some cases small 

 and poorly tilled, in all cases resembled typical Hickory King, and 

 the writer thinks it can be detiniteh' concluded that the}' were the 

 results of self-fertilized kernels. The true hy])rids were verj- late in 

 showing their silks, the great majority of them not being ready for 

 crossing before the 1st of September. The first of these to be ready 

 for crossing were inbred August 14. (^uite a luunber were inbred, 

 but only a very few matured seed. 



The following are notes on the individual hvbrids which were inbred 

 and produced ears. The number of the hybrid in each case is the 

 number given to it in my series of experiments. 



No. 5: Plant grown from one of the four kei"nels which showed 

 xenia in the plumbeous-colored spots derived froni the male parent. 

 (PI. I, fig. 9.) Ear inclosed August 12, 1899; in})red August 21, 1899, 

 with pollen of another hybrid of the same c-haracter and parentage. 

 Plants robust, 10 feet high, with several whorls of anchor roots; stem 

 purplish. The small ear which matured contained only sixty kernels. 

 Cob pinkish or fuscous. Kernels between coral red and rufous (PL 

 I, figs. 1.5 and 10), about half of them being variously mottled or varie- 

 gated with irregular dark-brown or plumbeous spots. The coloring 

 matter forming these spots was limited to the aleurone cells of the 

 endosperm, showing through t\w translucent coral-red pericarp. The 

 color of the spots is the typical plumbeous of the endosperm of the 

 Cuzco, which was the male parent, and is the same as the xenia spots 

 shown in the original seed planted. The coral-red or rufous color is 

 in the pericarp and was apparently derived from the Cuzco, some of 

 the kernels of which show this peculiar color. (PI. I, fig. fi.) It 

 seems to be a color limited entirely to the pericarp, and in no instance 

 of the writer's crosses with the Cuzco has it been shown as xenia. 

 25268— No. 22 2 



