SUMMARIES OF THE HISTOLOGIC CHARACTERS, ETC. 



323 



434 (42.7 per cent) fall under same as or inclined to 

 seed parent, 330 (32.4 per cent) under same as or in- 

 clined to pollen parent, 140 (13.8 per cent) under same 

 as both parents, and 114 (11.1 per cent) under as close 

 to one as to the other parent. Nearly all of the reactions 

 recorded as being the same as those of both parents have 

 been found so because of too rapid or too slow gelatiniza- 

 tion, and therefore doubtless misleading and defective 

 in classification. It is of especial interest to note that 



TABLEG 1. Summary of Sameness and Inclination of the Reaction- 

 intensities of the Starches of the Hybrids in relation to the 

 Starches of the Parent-Stocks. 



764 (75.1 per cent) of the reactions fall under the first 

 two columns, 42.7 per cent of the 75.1 per cent, or dis- 

 tinctly more than one-half, being in favor of the seed 

 parent and the remaining 32.4 per cent being in favor of 

 the pollen parent, showing a distinctly greater influence 

 of the seed parent. The last column includes many of 

 the intermediate, excess, and deficit reactions of the hy- 

 brids, some of which will likely be traced by further 

 investigation to closeness to one or the other parent. 

 Thus, when a reaction of the hybrid exceeds parental 

 limits and is as close to one as to the other parent it is as 

 likely that the peculiarity of the hybrid is due to one of 

 the parents as to both. At present we have not the data 

 to permit of this differentiation. 



REACTION-INTENSITIES OF ALL THE HYBKID STAECHES 

 WITH EACH AGENT AND REAGENT AND AS REGARDS 

 SAMENESS AND INCLINATION OP THEIR PROPERTIES 

 IN RELATION TO ONE OR THE OTHER OR BOTH 

 PARENTS. 



(Table H, Parts 1 to 20 and Summaries 1 and 2.) 



In Table F, 1 to 50, in a preceding subsection it is 

 shown that combinations of the reactions of starches with 

 different agents and reagents give in the case of each 

 starch a mosaic picture that is specific to the starch, no 

 two tables being the same, or even very much alike, even 

 when the hybrids arc of the same cross ; and that, as a 

 corollary, ench hybrid starch can positively be diagnosed 

 from every other by the peculiarities of the parental rela- 

 tionships. It was also rendered evident that this demon- 

 stration of individuality is dependent upon both specifi- 

 city of the starch and specificity of the agent or reagent, 

 as is manifest by the fact that if one starch be substituted 

 for another or one reagent substituted for another the 

 reactions may be like or unlike. Thus, taking the three 

 Crinums, it will be seen that the iodine reactions of the 

 seed parents are in all three the same or practically the 

 same as those of the corresponding pollen parents. In 

 the temperature reactions one (C. hybridum j. c. h.) 

 has a higher reactivity than that of either parent and 

 closer to the pollen parent; another (C. kircape) has an 

 intermediate reactivity and is closer to the seed parent; 

 and another (C. powellii) has a higher reactivity than 

 that of either parent and closer to the pollen parent. 

 In the chloral-hydrate reactions one hybrid is inter- 

 mediate and closer to the pollen parent ; another the same 

 as the seed parent ; and another the highest, and as close 

 to one as to the other parent. In the pyrogallic acid 

 reactions one hybrid is the lowest and closer to the pollen 

 parent ; another intermediate and closer to the pollen 

 parent ; another highest and closer to the pollen parent, 

 etc. In other words, the nature of the reaction is deter- 

 mined by the character of the starch plus the character 

 of the agent or reagent ; each starch has inherently poten- 

 tialities of both parents that are expressed by reaction- 

 intensities, either or both of which may be elicited in 

 accordance with conditions ; different agents and reagents 

 may behave the same or differently in relation to these 

 potentialities; and either parental potentiality can be 

 developed at will by proper selection of the agent or 

 reagent. 



These facts are of such fundamental importance and 

 broadness in their bearings that it seems to be highly 



