GENUS CANNA. 



811 



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



loDiNK Reactions. 

 Inlenstiy and Color. 



C. warszewiczii: Deep; blue- violet. 



C. roscoeana: Very deep, deeper than in C. vxtrszewiczii; 

 blue-violet. 



C. muscefolia: Deep, the same as in C. warszewiczii; blue- 

 violet. 



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

 wiczii; blue-violet. 



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

 warszewiczii; blue-violet. 



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

 warszewiczii; blue- violet. 



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

 warszewiczii; blue-violet. 



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

 warszewiczii; blue-violet. 



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

 warszewiczii; blue- violet. 



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

 warszewiczii; blue-violet. 



Staining Reactions. 



With Oentian Violet. 



C. warszewiczii: Deep. 



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



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



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

 wiczii. 



C. var. {Konigen Charlotte): Deep, the same as in C. 

 warszeviiczii. 



C. var. {President Camol): Deep, not so deep as in C. 

 warszewiczii. 



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

 warszewiczii. 



C. var. {Mrs. Kate Grey): Fairly deep, not so deep as in 

 C. warszewiczii. 



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

 wiczii. 



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

 wiczii. 



With Safranin. 



C. warszewiczii: Very deep. 



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



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

 wiczii. 



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



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

 warszewiczii. 



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

 warszewiczii. 



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

 zewiczii. 



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

 C warszewiczii. 



C. var. {Jean Tissot): Deep, slightly less than in C 

 warszewiczii. 



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

 warszewiczii. 



Temperature op Gelatinization. 



C. warszewiczii: 68 to 70° C, mean 69°. 



C. roscoeana: 69 to 70° C, mean 69.5°. 



C. musafolia: 70 to 71° C, mean 70.5°. 



C. edulis: 67 to 68° C, mean 67.5°. 



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



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



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



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



C. var. {Jean Tissot): 69 to 71° C, mean 70°. 



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



Effects of Vabious Reaoknts. 

 Reaction with Chloral Hydrate-Iodine. 



C. warszewiczii: Begins in a minute; complete in 2fi 



minutes. 

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

 C. muscefolia: Begins in a minute; complete in 20 minutes. 

 C. edulis: Begins in IJ^ minutes; complete in most in 



10 minutes, and in all in 18 minutes. 

 C. var. {Kimigen Charlotte): Begins in 30 seconds; com- 

 plete in 11 minutes. 

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



in 9 minutes. 

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



22 minutes. 

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



in 13 minutes. 

 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 in 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. muscefolia: Begins in 30 seconds; complete in 3H 

 minutes. 



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



C. var. {Kimigen Charlotte): Begins in 15 seconds; com- 

 plete in IJ^ minutes. 



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

 plete in IJ^ minutes. 



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

 2 minutes. 



C. var. {Mrs. Kale Grey): Begins in a few seconds; com- 

 plete in 1 Ji minutes. 



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

 in 2^ minutes. 



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

 in 1^ minutes. 



Reaction with Pyrogallic Acid. 



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

 sixth in 20 minutes. 



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

 and all reacting in 16 minutes. 



C. muscefolia: Begins in IJ^ minutes; complete in a few 

 grains and one-fifth partially gelatinized in 16 

 minutes. 



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



C. var. {Kimigen 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 secondsj com- 

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



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

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

 in 30 minutes. 



C. v&T. {Mrs. Kate 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 IJ^ minutes; complete in 10 



minutes. 



