LILIUM. 



99 



three with chloral hydrate. These peculiarities are in 

 accord with the shifting relationship to one or the other 

 parent recorded in the histologic and qualitative charac- 

 ters. In the reactions in which gelatinization is very 

 rapid, marked differences would in all likelihood have 

 appeared had the concentration of the reagents been less, 

 so as to lengthen the periods of gelatinization. 



Ebaction-intensities of the Hybrid. 



This section treats of the reaction-intensities of the 

 hybrid as regards sameness, intermediateness, excess, 

 and deficit in relation to the parents. (Table A 28 and 

 Charts D 367 to D 372.) 



The reactivities of the hybrid are the same as those 

 of the seed parent in the reactions with polarization, 

 potassium iodide, potassium sulphide, and sodium hy- 

 droxide; the same as those of the pollen parent with 

 gentian violet, safranin, and cupric chloride; the same 

 as those of both parents with potassium hydroxide and 

 copper nitrate; intermediate with chromic acid, pyro- 

 gallic acid, sulphuric acid, hydrochloric acid, calcium 

 nitrate, cobalt nitrate, and barium chloride (in five be- 

 ing nearer the seed parent, in one nearer the pollen 

 parent, and in one as near to one as to the other parent) ; 

 highest with temperature, potassium sulphocyanate, so- 

 dium sulphide, sodium salicylate, uranium nitrate, and 

 strontium nitrate (in all six being closer to the seed 

 parent) ; and lowest with iodine, chloral hydrate, nitric 

 acid, and mercuric chloride (in two being nearer the 

 seed parent, in one nearer the pollen parent, and in one as 

 close to one as to the other parent) . 



The following is a summary of the reaction-intensi- 

 ties : Same as seed parent, 4 ; same as pollen parent, 3 ; 

 same as both parents, 2'; intermediate, 7; highest, 6; 

 lowest, 4. 



The seed parent in comparison with the pollen parent 

 has had a very potent influence in determining the prop- 

 erties of the starch of the hybrid. While there is a dis- 

 tinct tendency to intermediateness, there is an equal 

 tendency to sameness as regards one or the other parent, 

 and a decidedly greater tendency to highest and lowest 

 reactivities of the hybrid. 



Composite Curves of Eeaction-intensities. 



This section treats of the composite curves of the 

 reaction-intensities, showing the diflferentiation of the 

 starches of Lilium chalcedonicum, L. candidum, and L. 

 testaceum. (Chart B 28.) 



The most conspicuous features of this chart are: 

 (1) The close correspondence of all three curves, 

 with the exception of those in the reactions with chloral 

 hydrate and pyrogallic acid. It seems, judging from 

 this and other records, that the reactions with chloral 

 hydrate, chromic acid, and pyrogallic acid have a dis- 

 tinct tendency to be aberrant. This is seen in the reac- 

 tions with chromic acid and pyrogallic acid of L. mar- 

 tagon in Chart E 26 ; with chloral hydrate and pyrogallic 

 acid of L. candidum, and in the pyrogallic-acid reaction 

 of the hybrid in this chart; and in the chromic-acid 

 and pyrogallic-acid reactions of the hybrid, L. hurianhi, 

 in Chart E 29. In most of the charts there is little or no 

 differentiation of the three starches, as in the reactions 

 with nitric acid, sulphuric acid, hydrochloric acid, potas- 

 sium hydroxide, potassium iodide, potassium sulphocya- 

 nate, potassium sulphide, sodium hydroxide, sodium sul- 

 phide, sodium salicylate, calcium nitrate, uranium ni- 

 trate, strontium nitrate, copper nitrate, cupric chloride, 

 and mercuric chloride. The curves of the hybrid and 

 L. candidum tend to be more closely related than the 

 curves of the hybrid and the other parent, or the curves of 

 the parents. 



