NARCISSUS. 



81 



to a moderate separation being in the reactions with 

 chromic acid and nitric acid. 



(2) In N. abscissus in comparison with the other 

 parent the higher reactions with polarization, chromic 

 acid, and nitric and: the lower reactions with iodine, 

 gentian violet, safranin, and temperature; and the 



or practically the same reactions with chloral hydrate, 

 |i\ rogallic acid, and sulphuric acid. 



(3) in N. abscissus the very high i with sul- 

 phuric acid; the high reaction with chromic acid; the 

 moderate reactions with polarization, iodine, safranin, 

 and pyrogallic acid ; the low reactions with gentian violet, 

 temperature, and aitric acid; and the very low reaction 

 with chloral hydrate. 



(4) In N. poeticus pot tarum the very high sulphuric- 

 acid reaction ; the absence of a high reaction ; the moder- 

 ate reactions with polarization, iodine, safranin, tem- 

 perature, and pyrogallic acid; the low rea ons with 

 gentian violet, chromic acid, and nitric acid ; and the 

 very low reaction with chloral hydrate. 



(5) Tn the hybrid the very high reaction with sul- 

 phuric acid : the absence of a high reaction ; the modi rate 

 reactions with polarization, iodine, safranin. chromic 

 acid, and nitric acid: the low reactions with gentian 

 violet, temperature, and pyrogallic acid; and the verj 

 low reaction with chloral hydrate. 



The following is a summary of the reaction-intensi- 

 ties (10 reaction-; ) : 



10. Comparisons of the Starches of Narcissus 

 albicans, x. abscissus, and ~n. bicoiiob apricot. 



In histologic characteristics, polariscopic figures, 

 reactions with selenite. qualitative reactions with iodine, 

 and qualitative reactions with the various chemical reag- 

 ents the starches of the parents and hybrid exhihit prop- 

 erties in common in varying degrees of development 

 together with certain individualities which collectively 

 in each case are distinctive of the starch. In his- 

 tologic properties there are certain well-defined dilTer- 



between the starches of the parents. In Narcissus 

 abscissus compared with the other parent the polari- 

 scopic figure is not so well defined, and there are minor 

 differences in the lines; and with selenite the quadrants 

 are not so clean-cut and are more irregular, the i 

 are more often pure, and more grains have a frreenish 

 . Tn the iodine reactions no qualitative difference 

 was recorded. In the qualitative reaction- with chloral 

 hydrate, chromic acid, pyrogallic acid, nitric acid, and 

 sulphuric arid there are both properties in common and 

 differences which are quite definite. The starch of the 

 hybrid has fewer compound grains than in either pari I '. 

 and in form generally shows a closer relation-hip to 

 N. albicans than to .V. abscissus. While the eccent 

 of the hilum is about the same in all three starches, the 

 character of the hilum is somewhat closer to that of 



6 



A', abscissus. In the character <<\ th. lamella and in the 



grains the relation-hip er to N. alb 



I n the chai i ilariscopii -el tic ap 



• nil.- t!ie relationship is much 

 it ans. In the qualitati ve iodine n a 

 grains show a closer relationship to .V. albicans, but 

 after heating the relation-hip 



parent. In the qualitative chemical reaction- peculiari- 

 if both parent- are observed. With chloral hydrate 

 the reactions, on the v. h-.], . more i '■ 

 of Y. albicans; but in those with chromic a allic 



arid, mi nc acid, and sulphuric a» id • able more 



" parent. There are also certain 

 individualities in the way of accentuation in the hybrid. 



Reaction-intensities Expressed by Light, Color, on, 



/.'. actions. 

 Polarization . 



X. albicans, low to high, value 37. 



N'. abscissus, low to high, higher than in X. albicans, value -13. 

 X. bicolor apricot, low to high, the Bame a- iu .X. albicans, val 

 I 

 X. albicans, moderate, valui 

 X. abscissus. light to moderate, much less than in X. albicans, 



value i 1 1 

 N. bicolor apricot, moderate, intermediate between <le- i 

 but much closer to X. albicans, value 53. 

 Gentian violet : 



X. albicans, light to moderate, value 40. 



X. abscissus, light to moderate, lighter than in X. albicans, value 33. 

 X. bicolor apricot, light to moderate, the same as X. albicans, 

 value 40. 

 Safranin: 



X. albicans, moderate, value 50. 



X. abscissus, moderate, less than in X value 47. 



N. bicolor apricot, moderate, the same as N. albicans, value 50. 

 Temperature: 



X. albicans, in majority at 7(1.2 to 72°, in all at 73 to 7o°, mean 74°. 

 X. abscissus, in majority at 00.5 to 71°, in all at 73 to 74°, mi an 



73.5". 

 X. bicolor apricot, in majority at 71 to 72.5°, in all at 74 to 7o°, 

 mean 75°. 



The reai I ritj of ,v. albicans is higher than that of 

 the other parent in the reactions with iodine, gentian 

 violet, and safranin: and lower iu those with polariza- 

 tion and temperature. The reactivity of the hybrid is the 



-ame or practically the -.• a- thai of A', albicans with 



polarization, gentian violet, and safranin; interim 



'I ' ■ ' o • \ 19. 



