243 



PERIOD OF REACTION IB 

 5 '0 '5 20 25 30 



minutes. 



5 40 45 50 55 60 



period or reaction m umn!i 

 b 10 TS 20 _ 25 30 35 40 45 50 95 60 



PERIOD Or REACTION 01 «E»ms 



Charts D 448 to D 462. — Velocity-Reactions of Starches of Iris persica var. purpurea ( ), Iris sindjarensi 



( ), and Iris pursind ( ). 



448. With Potassium Hydroxi : 



449. With Potassium Iodide. 



450. With Potassium Sulpbocyanate. 



451. With Potassium Sulphide. 



452. Wjth Sodium Hydroxide. 



With Sodium Sulphide. 

 454. U nh Sodium Salicylate. 

 i i u if ii Calcium Nit rate. 

 456 With Uranium Nitrate. 

 457. With Strontium Nitrate. 



158 With Cobalt Nitrate, 

 i I With Cop| er N .irate. 

 460. W 



With Barium Chloride. 

 402. With Mercuric Chloride. 



