614 



STARCHES OF LILIACEiE. 



A feature worthy of note is the marked differences shown by different genera in the relative reac- 

 tion-intensities. Upon this basis the several genera of Liliacece examined may be grouped in three 

 or four classes having from high to low reaction intensities, or, in other words, having low to high 

 resistances to chemical reagents. Thus, Lilium, Fritillaria, Calochortus, Tulipa, Erythronium, 

 Scilla, Chionodoxa, Omithogalum, Puschkinia, and Galtonia have, on the whole, high reaction-inten- 

 sities; in Hyacinthus and Lachenalia there is a tendency to a lower standard; in Muscari and Triie- 

 leia still lower, and in Brodiaa, on the whole, the lowest of all. The differences in the resistance 

 of the starches of Brodioea to chemical reagents compared with those of Tulipew, for instance, is 

 striking. 



QartNo. 187. 



5 

 10 

 15 

 20 

 29 

 30 

 3» 

 40 

 45 

 50 

 56 



e 



9 

 10 

 II 

 12 



13 



5 

 10 

 15 

 20 

 25 

 30 



45 

 60 

 55 

 60 

 65 



15 

 20 

 25 

 30 

 35 



Compomte Curve of Mean Reaction-Intensities of 

 Starch of Lilium. 



Composite Curve of Mean Reaction-Intensities of 

 Starch of Fritillaria. 



Composite Curve of Mean Reaction-Intensities of 

 Starch of Calochortus. 



aartNo. 189. 



16 

 20 



25 

 30 

 35 

 40 

 49 

 50 

 55 

 60 

 69 



2 



3 

 4 

 6 

 6 

 7 

 8 

 9 

 10 

 II 

 U 

 13 



25 

 30 

 35 

 40 



Composite Curve of Mean Reaction-Intensities of 

 Starch of Tulipa. 



Composite Curve of Mean Reaction-Intensities of 

 Starch of SciUa. 



10 

 15 

 20 

 25 

 30 

 36 

 40 

 45 

 50 

 65 

 60 

 65 



Composite Curve of Mean Reaction-Intensities 

 of Starch of Chionodoxa. 



