GENUS TXJLIPA. 



539 



Differentiation of Certain Starches of the Genus Tulipa. — Continued. 



PoLARlscopic Properties. — Continued. 

 Degree of Polarization. — Continued. 

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

 'J'. prcBcox: Fairly high, higher than in T. hageri. 

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



Polarization with Seleiiile — Quadrants and Colors. 

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



shape, unequal in size; blue pure, yellow slightly 



impure. 

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

 T. greigi: Quadrants an<i colors same as in T. hageri. 

 T. hillietiana: 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 T. hageri. 

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



in T. hageri. 

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

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



T. hageri. 

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

 T. prcecox: 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. hillietiana: 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 T. hageri; 



blue-violet. 

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



blue- violet. 

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

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



Staining Reactions. 

 With Gentian Violet. 

 T. hageri: Fair. 



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

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

 T. hillietiana: 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. clusiana: Fair, deeper than in T. hageri. 

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

 T. oculus-solis: Fairly deep. 

 T. prcecox: Deep. 

 T. australis: Fairly deep. 



With Safranin. 

 T. hageri: Light. 



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

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

 T. hillietiana: 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, slightly deeper than in 



T. hageri. 

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

 T. clusiana var. persica: Light, slightly deeper than in T. 



hageri. 

 T. oculus-solis: Light, slightly deeper than in T. hageri. 

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

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



Temperature op Gei^atinization. 



T. hageri: 50.4 to 51.4° 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. hillietiana: 55.1 to 55.4° C, mean 55.25°. 



7'. didieri: 50 to 51.5° C, mean 50.75°. 



7'. 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. clusiana: 54 to 55.7° C, mean 54.85°. 



T. clusiana var. persica: 55.5 to 56.1° C, mean 55.8'. 



T. oculus-solis: 56.2 to 68° C, mean 57.1°. 



T. priecox: 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 all in 30 seconds; complete in 



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

 T. greigi: Begins in most in 15 seconds; complete in nearly 



all in 5 minutes and in all in 10 minutes. 

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



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

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



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



minutes. 

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



all in 4 minutes and in all in 6 minutes. 

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



complete in nearly all in 6 minutes and in all in 



10 minutes. 

 T. oadus-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 in 19 minutes. 

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



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



Reaction u~ith Chromic Add. 



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; complete in all in 30 seconds. 

 T. hillietiana: 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. clusiana: Begins in all at once; complete in all in 40 



seconds. 

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



complete in all in 60 seconds. 

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



in all in 60 seconds. 

 T. prcecox: 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. 



Reaction 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. 



