GENUS CANNA. 



811 



Differentiation of Certain Starches of the Genus Canna Continued. 



C. 

 C. 



C. 



C. 



C. 



C. 



C. 



C. 



C. 



c. 



c. 

 c. 

 c. 

 c. 



c. 



c. 



c. 



c. 



c. 



c. 



c 

 c 



c 



c, 

 c. 



c. 



c. 



a. 



c. 



c. 



Iodine Reactions. 



Inlensily and Color. 



warszewiczii: Deep; blue- violet. 



roscoeam: Very deep, deeper than in C. warszewiczii; 

 blue-violet. 



mttsa-folia: Deep, the same aa in C. warszewiczii; blue- 

 violet. 



edulis: Very deep, much deeper than in C. warsze- 

 wiczii; blue-violet. 



var. {Konigeti Charlotte): Deep, not so deep as in C. 



warszewiczii; blue-violet, 

 var. {President Carnot): Deep, deeper than in C. 

 warszewiczii; blue-violet. 



var. (L. E. Bally): Deep, slightly deeper than in C. 

 warszeuriczii; blue-violet. 



var. (Mrs. Kale Grey): Very deep, deeper than in C. 

 warszewiczii; blue-violet. 



var. (Jean Tissol): Deep, slightly deeper than in C. 

 tvarszewiczii; blue-violet. 



var. (J. D. Eisele): Deep, sUghtly deeper than in C. 

 warszewiczii; blue-violet. 



Staining Reactions. 

 With Gentian Violet. 



warszewiczii: Deep. 



roscoeana: Deep, the same as in C. warszewiczii. 



musaefolia: Deep, the same as in C. warszeiviczii. 



edulis: Fairly deep, not so deep as in C. warsze- 

 wiczii. 



var. (Kmigen Charlotte): Deep, the same as in C. 

 warszeiviczii. 



var. (President Carnot): Deep, not so deep aa in C. 

 warszewiczii. 



var. (L. E. Bally): Deep, not quite so deep as in C. 

 warszewiczii. 



var. (Mrs. Kale Grey): Fairly deep, not so deep as in 

 C. warszewiczii. 



var. (Jean Tissot): Deep, deeper than in C. warsze- 

 iviczii. 



var. (J. D. Eisele): Deep, deeper than in C. warsze- 

 wiczii. 



With Safranin. 



warszewiczii: Very deep. 



roscoeana: Deep, not so deep as in C. warszeiviczii. 



muscefolia: Very deep, the same as in C. warsze- 

 wiczii. 



edulis: Deep, not so deep as in C. warszeiviczii. 



var. (Kiinigen Charlotte): Deep, not so deep as in C. 

 warszeiviczii. 



var. (President Carnot): Deep, not so deep as in C. 

 warszewiczii. 

 . var. (L. E. Bally): Deep, not so deep as in C. wars- 

 zewiczii. 



var. (Mrs. Kale Grey): Fairly deep, not so deep as in 

 C. warszewiczii, 



var. (Jean Tissol): Deep, shghtly less than in C. 

 warszeuriczii. 



var. (J. D. Eisele): Very deep, the same as in C. 

 warszewiczii. 



Temperature of Gelatinization. 



tvarszewiczii: 68 to 70 C, mean 69. 



roscoeana: 69 to 70 C, mean 69.5. 



musmfolia: 70 to 71 C, mean 70.5. 



edulis: 67 to 68 C, mean 67.5. 



var. (Konigen Charlotte): 64.5 to 66 C, mean 65.25. 



var. (President Carnot): 64 to 66 C, mean 65. 



var. (L. E. Bally): 68 to 70 C, mean 69. 



var. (Mrs. Kate Grey): 62 to 63 C, mean 62.5. 



var. (Jean Tissol): 69 to 71 C, mean 70. 



var. (J. D. Eisele): 62 to 63 C, mean 62.5. 



Effects of Various Reaqents. 

 Reaction with Chloral Hydrate-Iodine. 



C. warszewiczii: Begins in a minute; complete in 25 



imnutes. 

 C. roscoeana: Begins in a minute; complete in 15 minutes 

 C. miistefoha: Begms inaminute; complete in 20 minutes 

 C. eduhs: Begins in 1"^ minutes; complete in most in 



10 minutes, and in all in 18 minutes. 

 C. var. (Konigen Charlotte): Begins in 30 seconds; com- 

 plete in 11 minutes. 

 C. var. (President Carnot): Begins in a minute; complete 



m 9 mmutes. 

 C. var. (L. E. Bally): Begins in a minute; complete in 



22 mmutes. 

 C. var. (Mrs. Kate Grey): Begins in a minute; complete 



in 13 mmutes. 

 C. var. (Jean Tissot): Begins in 45 seconds; complete in 



nearly all in 10 minutes, and in all in 20 minutes. 

 C. var. (J. D. Eisele): Begins in a minute; complete in 



most m 7 minutes, and in all in 14 minutes. 



Reaction with Chromic Acid. 



C. warszewiczii: Begins in 30 seconds; complete in 2 

 minutes. 



C. roscoeana: Begins in 30 seconds; complete in 3 minutes 



C. muswfoha: Begins in 30 seconds; complete m Z14 

 minutes. 



C. edulis: Begins in 15 seconds; complete in 2'^ minutes 



C. var. (Konigen Charlotte): Begins in 15 seconds; com- 

 plete in IJ^ minutes. 



C. var. (President Carnot): Begins in 15 seconds; com- 

 plete in 1 J4 minutes. 



C. var. (L. E. Bally): Begins in 15 seconds; complete in 

 2 mmutes. 



C. var. (Mrs. Kate Grey): Begins in a few seconds; com- 

 plete in 1^ minutes. 



C. var. (Jean Tissot): Begins in 15 seconds; complete 

 in 23^ minutes. 



C. var. (J D. Eisele): Begins in 15 seconds; complete 

 m 154 minutes. 



Reaction vrith Pyrogallic Acid. 



C. warszewiczii: Begins in a minute; complete in one- 

 si.xth in 20 minutes. 



C roscoeana: Begins in 2 minutes; complete in 1 or 2 

 and all reacting in 16 minutes. 



C. muscefolia: Begins in l}4 minutes; complete in a few 

 grains and one-fifth partially gelatinized in 15 

 minutes. 



C. edulis: Begins in 30 seconds; complete in 20 minutes. 



C. var. (Kmigen Charlotte): Begins in a minute; com- 

 plete in three-fourths in 15 minutes, and in all in 

 40 minutes. 



C. var. (President Carnot): Begins in 45 seconds; com- 

 plete in most in 6 minutes, and in all in 12 minutes. 



C. var. (L. E. Bally): Begins in a minute; complete in 

 one-half in 10 minutes, and nearly complete in all 

 in 30 minutes. 



C. \a.T. (Mrs. Kale Grey): Begins in 30 seconds; complete 

 in nearly all in 10 minutes, and in all in 20 minutes. 



C. var. (Jean Tissot): Begins in a minute; about one- 

 half are completely and the rest nearly completely 

 gelatinized in 15 minutes. 



C. var. (J. D. Eisele): Begins in 30 seconds; complete 

 in three-fourths in 6 minutes, and in practically 

 all in 15 minutes. 



Reaction with Ferric Chloride. 



C. warszewiczii: Begins in 2 minutes; complete in 15 



minutes. 

 C. roscoeana: Begins in 1>^ minutes; complete in 10 



minutes. 



