247 



nuoD Of BZAcnoN 01 uonms. 



V 10 15 20 25 30 35 40 4 5 50 M 9ft 

 n i I ■■ I 1 1 1— T 1 1 1— *1 



514 



PERIOD OP REACnOR Dt umnTBs. 



Chaets D 505 TO D 507, D 509 to D 519. — Vehcity-Reactions of Starches of Begonia single crimson scarlet (- 



Begonia socotrana (- -), and Begonia mrs. heal ( ). 



), 



505. With Chloral Hydrate. 



506. With Chromic Acid. 



507. With Pyrogallic Acid. 

 509. With Nitric Acid. 

 610. With Sulphuric Acid. 



511. With Hydrochloric Acid. 



512. With Potassium Hydroxide. 



513. With Potassium Iodide. 



514. With Potassium Sulphocyanate. 



515. With Potassium Sulphide. 



516. With Sodium Hydroiide. 



517. With Sodium Sulphide. 



518. With Sodium Salicylate. 



519. With Calcium Nitrate. 



Chart D 508. — Velocity-Reactions of Pyrogallic Acid with the Starch of Begonia single crimson scarlet. Percentage 

 of entire number of grains ( ) and total starch ( ) gelatinized. 



