257 



PERIOD OP REACTION Ql MIFTTTFS 

 6 10 15 20 25 30 35 40 45 50 58 00 



5 50 



o 40 



6 3 



S 20 



PERIOD OP REACTION W MDnjTE* 

 5 10 15 20 25 30 35 40 4 



PERJOD OP REACTION IW MINUTES. 



5 50 55 60 



62? 



CHARTS D 627 TO D 634. Velocity-Reactions oj Starches of Calanthe veslita var. rubro-oculata ( - --), Calanthe 



regnieri ( -)> and Calanthe bryan ( ). 



627. With Pyrogallic Acid. 



628. With Chloral Hydrate. 



629. With Chromic Acid. 



630. With Nitric Acid. 



631. With Sulphuric Acid. 



632. With Hydrochloric Acid. 



633. With Potassium Hydroxide. 



634. With Sodium Salicylate. 



17 



