2G2 



rauoD or ruction a aoxtrm 

 5 10 15 ?0 25 30 35 40 45 50 55 60 



PERJOD Ot REACTION Dt MINUTES 



if 



a o 

 I E 



S 3 



a 



1 - 



eo 

 jj 

 g 



3 60 



'. 



PEBIOD OP R£ACTI05 CI MUrffTtS. 

 10 15 20 25 30 35 40 45 50 55 60 



4 100 



period or reaction n» MotcrTU 

 5 10 15 20 25 30 35 4Q 45 50 55 60 



H 



o a 70 



e 3 co 



IB J 



U 



i K 40 





685 



VEBtOD or REACTION B BDTOTll 



20 25 30 35 40 45 50 55 60 



Charts D 683 to D 6S8. — Velocity-Reactions of Starch of Iris iberica with various reagents, showing the "percentage 

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



683. With Strontium Nitrate. 



684. With Cobalt Nitrate. 



685. With Copper Nitrate. 



686. With Cupric Chloride. 



687. With Barium Chloride. 



688. With Mercuric Chloride. 



PERIOD OF REACTION Ot MINUTES- 



5 10 15 20 25 30 35 40 45 50 



Charts D 089 to D 091. — Velocity-Reactions of Starches of Amaryllis belladonna ( ), Phaius grandifolius 



( -),and Miltonia vexillaria ( ). 



With Uranium Nitrate. 690. With Cobalt Nitrate. 691. With Pyrogallic Acid. 



