GENUS TULIPA. 



539 



Differentiation of Certain Starches of the Genus Tulipa. Continued. 



PoiiARiacopic Properties. Continued. 

 Degree of Polarization. Continued. 

 T. ocidna-solis: Fairly high, higher than in T. hageri 

 T. pracox: Fairly high, higher than in T. hageri. 

 T. aiistralis: Fairly high, higher than in 3'. hageri. 



Polarization iMh Selenite Quadrants ami Colors. 

 T. hageri: Quadrants fairly well defined, fairly regular in 



shape, unecjual in size; blue pure, yellow slightly 



impure. 

 T. sylvestris: Quadrants and colors same as in T. hageri. 

 T. greigi: Quadrants and colors same as in T. hageri. 

 T. billieliana: Quadrants and colors same as in T. hageri. 

 T. didieri: Quadrants and colors same as in T. hageri. 

 T. didieri var. mauriana: Quadrants and colors same as 



in 7'. hageri. 

 T. didieri var. fninsoniana: Quadrants and colors same as 



in T. hageri. 

 T. dusiana: Quadrants and colors same as in T. hageri. 

 T. dusiana var. persica: Quadrants and colors same as in 



T. hageri. 

 T. oculus-solis: Quadrants and colors same as in T. hageri. 

 T. pnecox: Quadrants and colors same as in T. hageri. 

 T. auslralis: Quadrants and colors same as in T. hageri. 



Iodine Reactions. 

 Intensity and Color. 

 T. hageri: Deep; blue-violet. 



T. sylvestris: Deep, deeper than in T. hageri; blue-violet. 

 T. greigi: Deep, deeper than in T. hageri; blue-violet. 

 T. Mllietiana: Deep, less than in T. hageri; blue-violet. 

 T. didieri: Deep, less than in T. hageri; blue-violet. 

 T. didieri var. mauriana: Deep, less than in 7'. hageri; 



blue- violet. 

 T. didieri var. fransoniana: Deep, less than in T. hageri; 



blue- violet. 

 T. dicsiana: Deep, less than in T. hageri; blue-violet. 

 T. dusiana var. persica: Deep, deeper than in T. hageri; 



blue-violet. 

 T. oculus-solis: Deep, the same as in T. hageri; blue-violet. 

 T. prcpcox: Deep, less than in T. hageri; blue-violet. 

 T. auslralis: Deep, less than in T. hageri; blue-violet. 



Staining Reactions. 

 With Gentian Violet. 

 T. hageri: Fair. 



T. sylvestris: Fair, the same as in T. hageri. 

 T. greigi: Fair, deeper than in T. hageri. 

 T. billieliana: Fair, sUghtly deeper than in T. hageri. 

 T. didieri: Fair, deeper than in T. hageri. 

 T. didieri var. mauriana: Fair, deeper than in T. hageri. 

 T. didieri var. fransoniana: Fair, less than in T. hageri. 

 T. dusiana: Fair, deeper than in T. hageri. 

 T. dusiana var. persica: Fair, deeper than in T. hageri. 

 T. oculus-solis: Fairly deep. 

 T. pra:cox: Deep. 

 T. auslralis: Fairly deep. 



With Safranin. 

 T. hageri: Light. 



T. sylvestris: Light, same as in T. hageri. 

 T. greigi: Light, sUghtly deeper than in T. hageri. 

 T. billietiana: Light, slightly deeper than in T. hageri. 

 T. didieri: Light, slightly deeper than in T. hageri. 

 T. didieri var. mauriana: Light, slightly deeper than in 



T. hageri. 

 T. didieri var. fransoniana: Light, shghtly deeper than in 



T. hageri. 

 T. dusiana: Light, sUghtly deeper than in T. hageri. 

 T. dusiana var. persica: Light, sUghtly deeper than in T. 



hageri. 

 T. oculus-solis: Light, slightly deei)er than in T. hageri. 

 T. prwcox: Light, slightly deeper than in T. hageri. 

 T. auslralis: Light, slightly deeper than in T. hageri. 



Temperature of Gelatinizatiqn. 



T. hageri: 50.4 to 5L4 C, mean 50.9. 



T. sylvestris: 56.5 to 57.8 C, mean 57.15. 



T. greigi: 49.6 to 51 C, mean 50.3. 



T. billietiana: 55.1 to 55.4 C, mean 55.25. 



T. didieri: 50 to 51.5 C, mean 50.75. 



T. didieri var. mauriana: 50.2 to 51.7 C, mean 50.95. 



T. didieri var. fransoniana: 50.1 to 52.2 C, mean 51 .15. 



T. dusiana: 54 to 55.7 C, mean 54.85. 



T. dusiana var. persica: 55.5 to 56.1 C, mean 55.8. 



T. oculics-solis: 56.2 to 58 C, mean 57.1. 



T. pra;cox: 54 to 55.5 C, mean 54.75. 



T. australis: 52.7 to 54.8 C, mean 53.75. 



Effects op Various Reagents. 



Reaction with Chloral Hydrate-Iodine. 



T. hageri: Begins in many in 15 seconds; complete in 



nearly all in 15 seconds and in all in 9 minutes. 

 T. sylvestris: Begins in aU in 30 seconds; complete in 



nearly all in 4 minutes and in all in 11 minutes. 

 T. greigi: Begins in most in 1 5 seconds ; complete in nearly 



all in 5 minutes and in all in 10 minutes. 

 T. billietiana: Begins in all in 30 seconds; complete in 



nearly aU in 10 minutes and in all in 15 minutes. 

 T. didieri: iJegins in most in 30 seconds; complete in 



nearly all in 10 minutes and in all in 17 minutes. 

 T. didieri var. mauriana: Begins in all in 30 seconds; com- 

 plete in nearly all in 5 minutes and in all in 17 



minutes. 

 T. didieri vax. fransoniana: Begins in most in 30 seconds; 



complete in nearly all in 8 minutes and in aU in 14 



minutes. 

 T. dusiana: Begins in all in 15 seconds; complete in nearly 



all in 4 minutes and in aU in 6 minutes. 

 T. dusiana var. persica: Begins in most in 15 seconds; 



complete in nearly aU in 6 minutes and in all in 



10 minutes. 

 T. oculus-solis: Begins in all in 30 seconds; complete in 



nearly all in 5 minutes and in all in 10 minutes. 

 T. prcecox: Begins in most in 30 seconds; complete in 



nearly all in 7 minutes and in all m 19 minutes. 

 T. auslralis: Begins in all in 15 seconds; complete in 



nearly all in 5 minutes and in all in 8 minutes. 



Reaction with Chromic Acid. 



T. hageri: Begins in most at once; complete in all in 45 



seconds. 

 T. sylvestris: Begins in all in a few seconds; complete in 



all in 30 seconds. 

 T. greigi: Begins in all at once; completeinaUinSOseconds. 

 T. billietiana: Begins in all in a few seconds; complete in 



all in 45 seconds. 

 T. didieri: Begins in all at once; complete in all in 45 



seconds. 

 T. didieri var. mauriana: Begins in all at once; complete 



in all in 50 seconds. 

 T. didieri var. fransoniana: Begins in all at once; com- 

 plete in all in 50 seconds. 

 T. dusiana: Begins in aU at once; complete in all in 40 



seconds. 

 T. dusiana var. persica: Begins in all in a few seconds; 



complete in all in 60 seconds. 

 T. oculus-solis: Begins in aU in a few seconds; complete 



in all in 60 seconds. 

 T. precox: Begins in all in a few seconds; complete in all 



in 60 seconds. 

 T. australis: Begins in all at once; complete in all in 40 



seconds. 



Rcaclion with Pyrogallic Acid. 



T. hageri: Begins in all in a few seconds; complete in all 



in 90 seconds. 

 T. sylvestris: Begins in all in a few seconds; complete in 



all in 60 seconds. 



