GENtrS IRIS. 



707 



Differentiation of the Starches of the Genus Iris. Continued. 



Effects of Vabiotjs Reagents. Continued. 

 Reaction u-itk Chloral Ifijdratc-Iodinc. Continued. 



/. iberica: Begins in most in 60 seconds; complete in 

 one-third in 3 minutes, and in all in 15 minutes. 



/. xiphium var. Grand Tresorier: Begins in all in 45 

 seconds; complete in two-tliirds in 8 minutes, and 

 in all in 15 minutes. 



/. xiphium var. Wilhehnine: Begins in most in 30 sec- 

 onds; complete in tliree-fourths iu 10 minutes, 

 and in all in 15 minutes. 



/. xiphium var. limlanica: Begins in all in 30 seconds; 

 complete in two-thii'ds in 10 minutes, and in 

 nearly all in 15 minutes. 



/. lingilana: Begins in most in 30 seconds; complete in 

 half in 10 minutes, and in practically all in 25 

 minutes. 



/. reticulata: Begins in all in 50 seconds; complete in 

 two-thirds in 17 minutes, in four-fifths in 25 min- 

 utes, and in all in 40 minutes. 



/. histrio: Begins in all in 15 seconds; complete in one- 

 third in 10 minutes, in three-fourths in 40 minutes, 

 and in all in 60 minutes. 



/. alala: Begins in most in 30 seconds; complete in 

 three-fifths in 15 minutes, and in nearly all in 

 30 minutes. 



I. caucasica: Begins in most in 30 seconds; complete in 

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



Reaction with Chromic Acid. 



I. florenlina: Begins in all in 5 seconds; complete in all 



in 25 seconds. 

 /. pallida var. speciosa: Begins in all in 20 seconds; 



complete in 2 minutes. 

 /. pumila var. cyanea: Begins in a few in 20 seconds; 



complete in 3 minutes. 

 I. bismarckiaria: Begins in a few seconds; complete in 



all in 35 seconds. 

 /. iberica: Begins in a few in 15 seconds; complete in 



all in 2 minutes. 

 /. xiphium var. Grand Tresorier: Begins in all in 15 



seconds; complete in all in a minute. 

 /. xiphium var. Wilhelmine: Begins in all in 15 seconds; 



complete in all in 70 seconds. 

 /. xiphium var. lusitanica: Begins in all in 15 seconds; 



complete in all in 2 minutes. 

 /. tingitana: Begins in all in 20 seconds; complete in all 



in 2}^ minutes. 

 /. reticulata: Begins in all in 30 seconds; complete in all 



in 2 minutes. 

 /. histrio: Begins in all in 30 seconds; complete in all in 



4 minutes. 

 /. alala: Begins in all in 20 seconds; complete in all in 



2J.2 minutes. 

 /. caucasica: Begins in all in 45 seconds; complete in all 



in 2 minutes. 



Reaction with Pyrogallic Acid. 



I. florentina: Begins in 10 seconds; complete in all in a 



minute. 

 /. pallida var. speciosa: Begins at once; complete in 



practically all in a minute. 

 /. pumila var. cyanea: Begins at once; complete in prac- 

 tically all in a minute. 

 /. bismarckiana: Begins in all in 7 seconds; complete in 



all in 70 seconds. 

 /. iberica: Begins in all in 20 seconds; complete in all in 



2}^ minutes. 

 /. xiphium var. Grand Tresorier: Begins in all in 15 



seconds; complete in all in 45 seconds. 

 /. xiphium var. Wilhelmine: Begins in all in 15 seconds; 



complete in all in a minute. 

 /. xiphium var. lusitanica: Begins in all in 15 seconds; 



complete in all in a minute. 



Effects of Various Reagents. Continued. 

 Reaction with Pyrogallic Acid. Continued. 



/. tingitana: Begins in all in 15 seconds; complete in all 



in a minute. 

 /. reticulata: Begins in all in 15 seconds: complete in all 



in a minute. 

 /. histrio: Begins in all in 30 seconds; complete in all in 



1^4 minutes. 

 /. alala: Begins in all in 15 seconds; complete in all in 



1}^ minutes. 

 /. caucasica: Begins in all in 10 to 15 seconds; complete 



in all in 1 j^ minutes. 



Reaction vrith Ferric Chloride. 



I. florentina: Begins in many in 30 seconds; complete 

 in all in 6 minutes. 



/. pallida var. speciosa: Begins in many in 30 seconds; 

 complete in practically all in 15 minutes. 



I. pumila var. cyanea: Begins in many in 30 seconds; 

 complete in practically all in 15 minutes. 



/. bismarckiana: Begins in many in 15 seconds; complete 

 in all in 5 minutes. 



I. iberica: Begins in some in 60 seconds; complete in all 

 in 12 minutes. 



/. xiphium var. Grand Tresorier: Begins in a few in 30 

 seconds; complete in all in 12 minutes. 



/. xiphium var. Wilhelmine: Begins in a few in 45 sec- 

 onds; complete in all in 8 minutes. 



/. xiphium var. lusitanica: Begins in some in 30 seconds; 

 complete in all in 15 minutes. 



/. tingitana: Begins in a few in 30 to 45 seconds; com- 

 plete in all in 20 minutes. 



I. reticulata: Begins in some in 30 seconds; complete in 

 nearly all in 25 minutes, and all in 35 minutes. 



/. histrio: Begins in many in 60 seconds; complete in 

 three-fourths in 25 minutes, and in all in 50 minutes. 



I. alata: BegLos in many in 60 seconds; complete in all 

 in 30 minutes. 



/. caucasica: Begins in many in 30 to 45 seconds; com- 

 plete in nearly all in 30 minutes and in all in 40 

 minutes. 



Reaction with Purdy's Solution. 



I. florentina: Begins in all in 60 seconds; about two- 

 thirds partially gelatinized in 10 minutes. 



/. pallida var. speciosa: Begins in a few in 30 seconds; 

 about one-tenth gelatinized in 15 minutes; very 

 little progress in 30 minutes. 



/. pumila var. cyanea: Begins in a few in 30 seconds; 

 about two-thirds partially and one-fifth fully 

 gelatinized in 15 minutes. 



/. bismarckiana: Begins in all in 30 seconds; about four- 

 fifths nearly completely gelatinized in 10 minutes. 



/. iberica: Begins in a few in 90 to 120 seconds; a few 

 partially gelatinized in 15 minutes. _ 



/. xiphium var. Grand Tresorier: Begins in a few in 60 

 seconds; one-fifth nearly completely gelatinized in 

 25 minutes. 



/. xiphiwnva.1. Wilhelmine: Begins in most in 45 seconds; 

 half nearly completely gelatinized in 30 minutes. 



/. xiphium var. lusitanica: Begins in all in 30 seconds; 

 a few partially gelatinized in ten minutes. 



/. tingitana: Begins in all in 30 seconds; one-third nearly 

 completely gelatinized in 15 minutes. 



/. reticulata: Begins in all in 45 seconds; all nearly com- 

 pletely gelatinized in 12 minutes. 



/. histrio: Begins in many in 45 seconds; all nearly com- 

 pletely gelatinized in 5 minutes. 



/. alata: Begins in all in 15 seconds; two-fifths nearly 

 completely and three-fifths partially gelatinized in 

 15 minutes. 



/. caucasica: Begins in many in 20 seconds; all nearly 

 completely gelatinized" in 8 minutes. 



