126 



Lot No. 1 showed 200 conns. I'dS leaves, i. e., 52 "blind" conns. Total 

 germination S6.G per cent. 



Lot No. 2 sliowed 24(; coinis. 226 leaves, i. e.. 20 'blind" cornis. Total 

 germination 83 per cent. 



Lot No. o sbowed 2(n conns. 2(iO leaves, i. e., ~\'l "blind" conns. Total 

 germination 87 per cent. 



It is not the purpose of this paper to discuss the variations which 

 mny l»e due to different temper;) ture conditions, but merely to show the 

 hi^h percentage of germiuation and to indicate the fact that some seeds 

 gernnnnle "blindly," that is, the embryo grows, a corni and roots arc- 

 produced, and food is transferred from seed to corm without the forma- 

 tion of leaves or other photosynthetie organ. At the end of the growing 

 season the connection with the seed is l)roken off, leaving the new plant 

 hidependent. 



A glance at the conns from these cultures at once suggests a differ- 

 ence in their food supply and growth. Some are three to six times as 

 large as others. While the numbers of large and small corms are not 

 exactly the same as the numbers of leafy and leafless plants, they are 

 nearly enough so to suggest a relation. 



A sinular set of experiments was arranged in which seeds ot Arixdittd 

 Dracoiifiinii were used. The seeds were prejiared and ])lanted December 

 2Ci, 1i)12. the same as in the case of .1. trijili iiUiini. Lot No. 1 was left 

 in the miiin room of the greenhouse, and showed, between February (! and 

 •March 8. Jin.'J, eight leaves. On .lane 10. 200 cornis and 24 seenungly good 

 seeds were removed. 



Lot No. 2 was left in the cold-frame from December 26 to March 

 1"» and then removed to the greenhouse. This culturi' showed eleven 

 leaves between Ajiril .". and Ajiril 2-". On Jnne 20, 171> conns and one 

 sound seed were remoxcd. 



Lot No. ." was left in the gi-eenhouse vestibide until .March 12, and 

 then removed to the '^reenbonse. Itetwceii April 2". and .lunc 20 fonr leaves 

 appeared, and on the last date LsT corms were removed. These results 

 arc tabulated below. 



Lot No. L .•'.00 seeds, 8 leaves (2.66 per cent.). 279 (03 per cent.) 

 coi'nis and \iable seeds. 



Lot No. s. I'OP seeds, 11 leaves (i;.!! per cent.), LSO (00 per ceid.) 

 cornis and viable seeds. 



