LILIUM. 



95 



From the foregoing data the pollen parent has been by 

 far the more potent in its influences on determining the 

 properties of the starch of the hybrid. The tendency 

 to intermediateness is quite manifest. 



Composite Curves of Eeaction-intensities. 



This section treats of the composite curves of the 

 reaction-intensities, showing the differentiation of the 

 starches of Lilium martagon, L. maculatum, and L. 

 dalhansoni. (Chart E 36.) 



The most conspicuous features of this chart are: 



(1) The close correspondence in the three curres 

 excepting in the reactions with chromic acid, pyrogallic 

 acid, and barium chloride, in which there occurs in each 

 instance a marked drop in the curve of L. martagon, 

 while the curves of L. maculatum and the hybrid tend 

 to keep the same or quite close together. In a large 

 number of reactions there is no differentiation between 

 the three starches, as in those with chloral hydrate, 

 nitric acid, sulphuric acid, hydrochloric acid, potassium 

 hydroxide, potassium iodide, potassium sulphocyanate, 

 potassium sulphide, sodium hydroxide, sodium sulphide, 

 and uranium nitrate; and in other instances there is a 

 tendency for the hybrid curve to be the same as that of 

 one or the other parent, or occasionally above both or 

 intermediate. In part the hybrid curve is more dis- 

 tinctly related to the curve of L. ma,culatum than to that 

 of the other parent, and in part the reverse. 



(2) In L. martagon in comparison with the other 

 parent, the high reactions with polarization, iodine, gen- 

 tian violet and safranin; the same or practically the 

 same with chloral hydrate, nitric acid, sulphuric acid, 

 hydrochloric acid, potassium hydroxide, potassium 

 iodide, potassium sulphocyanate, potassium sulphide, 

 sodium hydroxide, sodium sulphide, calcium nitrate, 

 uranium nitrate, and mercuric chloride ; and the lower 

 with temperature, chromic acid, pyrogallic acid, sodium 

 salicylate, strontium nitrate, cobalt nitrate, copper ni- 

 trate, cupric chloride, and barium chloride. 



(3) In L. martagon the very high reactions with 

 chloral hydrate, nitric acid, sulphuric acid, hydrochloric 

 acid, potassium hydroxide, potassium iodide, potassium 

 sulphocyanate, potassium sulphide, sodium hydroxide, 

 sodium sulphide, sodium salicylate, calcium nitrate, ura- 

 nium nitrate, strontium nitrate, cobalt nitrate, copper 

 nitrate, cupric chloride, and mercuric chloride ; the high 

 reactions virith polarization, iodine, chromic acid, pyro- 

 gallic acid, and barium chloride ; and the moderate reac- 

 tions with gentian violet, safranin, and temperature. 



(4) In L. maculatum the very high reactions with 

 chloral hydrate, chromic acid, pyrogallic acid, nitric 

 acid, sulphuric acid, hydrochloric acid, potassium hy- 

 droxide, potassium iodide, potassium sulphocyanate, po- 

 tassium sulphide, sodium hydroxide, sodium sulphide, 

 Slodium salicylate, calcium nitrate, uranium nitrate, 

 strontium nitorate, cobalt nitrate, copper nitrate, barium 

 chloride, and mercuric chloride; the high temperature 

 reaction; the moderate reactions with polarization, 

 iodine, gentian violet, and safranin. 



(5) In the hybrid, the very high reactions with 

 chloral hydrate, chromic acid, pyrogallic acid, nitric 

 acid, sulphuric acid, hydrochloric acid, potassium hy- 

 droxide, potassium iodide, potassium sulphocyanate, po- 

 tassium sulphide, sodium hydroxide, sodium sulphide, 

 sodium salicylate, calcium nitrate, uranium nitrate, 

 strontium nitrate, cobalt nitrate, copper nitrate, cupric 

 chloride, barium chloride, and mercuric chloride; the 

 high reactions with polarization and iodine ; and the mod- 

 erate reactions with gentian violet, safranin, and 

 temperature. 



