588 



STARCHES OF LILIACE^. 



Differentiation of Certain Starches of the Genus Muscari. Continued. 



PoLABiscopic Properties. 



Figure. 



M. botryoides: Centric or eccentric, distinct, fairly clear- 

 cut, usually regular. 



M. paradox-um: Centric or eccentric, not clear-cut, usu- 

 ally regular. 



M. micranlhum: Centric or eccentric, distinct, fairly clear- 

 cut, regular. 



M. conicmn: Centric or eccentric, distinct, fairly clear- 

 cut, usually regular. 



M. commulatum: Centric or eccentric, distinct, usually 

 clear-cut, usually regular. 



M. racemosum: Centric or eccentric, distinct, fairly clear- 

 cut, usually regular. 



M. campaclu7n: Centric or eccentric, distinct, fairly clear- 

 cut, usually regular. 



M. comosum: Centric or eccentric, distinct, not clear-cut, 

 usually regular. 



Degree of Polarization. 



M. botryoides: High. 



M. paradoium: High, variable, not so high as in M. 

 botryoides. 



M. micranlhum: High, somewhat variable, not so high as 

 in M. botryoides. 



M. conicum: High, slightly higher than in M. botry- 

 oides. 



M. commutatum: High, somewhat variable, not so high 

 as in M. botryoides. 



M. racemosum: High, slightly higher than in M. botry- 

 oides. 



M. compaclum: High, not quite so high as in M. botry- 

 oides. 



M. comosum: High, variable, as a whole, not so high as 

 in M. botryoides. 



Polarization with Selenite Quadrants and Colors. 



M. botryoides: Quadrants fairly well defined, regular in 

 shape. Colors pure. 



M. paradoxum: Quadrants fairly well defined, regular. 

 Colors often pure. 



M. micranlhum: Quadrants fairly well defined, quite regu- 

 lar. Colors pure. 



M. conicum: Quadrants fairly well defined, frequently 

 irregular. Colors usually pure. 



M. commutatum: Quadrants fairly well defined, regular 

 in shape. Colors pure. 



M. racemosum: Quadrants fairly well defined, usually 

 regular. Colors pure. 



M. compaclum: Quadrants fairly well defined, usually 

 regular. Colors pure. 



M. comosum: Quadrants fairly well defined, often irregu- 

 lar. Colors mostly impure. 



Iodine Reactions. 

 Intensity and Color. 



M. botryoides: Deep; blue-violet. 



M. paradoxum: Deep, not so deep as in M. botryoides; 

 blue- violet. 



M. micranlhum: Deep, same as in M. paradoxum; blue- 

 violet. 



M. conicum: Deep, same as in M. paradoxum; blue- 

 violet. 



M. commulatum: Deep, same as in M. paradoxum; blue- 

 violet. 



M. racemosum: Deep, same as in M. paradoxum; blue- 

 violet. 



M. compaclum: Deep, same as in M. paradoxum; blue- 

 violet. 



M. comosum: Deep, same as in M. paradoxum; blue- 

 violet. 



Staining Reactions. 

 With Gentian Violet. 



M. botryoides: Deep. 



M. paradoxum: Deep, slightly deeper than in M. botry- 

 oides. 



M. micranlhum: Deep, deeper than in M. botryoides. 



M. conicum: Deep, deeper than in M. botryoides. 



M. commutatum: Fair, much less deep than in M. botry- 

 oides. 



M. racemosum: Deep, not quite so deep as in M. botry- 

 oides. 



M. compaclum: Deep, shghtly deeper than in M. botry- 

 oides. 



M. comosum: Deep, deeper than in M. botryoides. 



With Safranin. 



M. botryoides: Fairly deep. 



M. paradoxum: Fairly deep, deeper than in M. botryoides. 

 M. micranlhum: Fairly deep, the same as in M. botryoides. 

 M. conicum: Fairly deep, deeper than in M. botryoides. 

 M. commulatum: Fair, less deep than in M. botryoides. 

 M. racemosum: Fairly deep, not quite so deep as in M. 



botryoides. 

 M. compaclum: Deep, deeper than in M. botryoides. 

 M. comosum: Fairly deep, slightly deeper than in M. 



botryoides. 



Temperature op Gelatinization. 



M. botryoides: 70 to 72 C, mean 71. 

 M. paradoxum: 72 to 74 C., mean 73. 

 M. micranlhum: 68.5 to 70 C, mean 69.25. 

 M. conicum.: 72 to 74 C, mean 73. 

 M. commutatum: 71 to 73 C, mean 72. 

 M. racemosum: 74.5 to 75 C, mean 74.75. 

 M. compaclum: 69 to 71 C, mean 69. 

 M. comosum: 67 to 69 C, mean 68. 



Effects of Vauiods Reagents. 

 Reaction xoith Chloral Hydrate-Iodine. 



M. botryoides: Begins in most in 45 seconds; complete in 



20 minutes. 

 M. paradoium: Begins in half in 45 seconds; complete 



in four-fifths in 40 minutes. 

 M. micranlhum: Begins in many in 30 seconds; complete 



in 20 minutes. 

 M. conicum: Begins in all in 30 seconds; complete in 



three-fourths in 48 minutes. 

 M. commutatum: Begins in many in 60 seconds; com- 

 plete in nearly all in 17 minutes, and in all in 30 



minutes. 

 .M. racemosum: Begins in most in 30 seconds; complete 



in nearly all in 30 minutes, all in 50 minutes. 

 M. compaclum: Begins in most in 30 seconds; complete 



in 30 minutes. 

 M. comosum: Begins in most in 60 seconds; complete in 



all in 30 minutes. 



Reaction with Chromic Add. 



M. botryoides: Begins in 15 seconds; complete in 3J^ 



minutes. 

 M. paradoxum: Begins in 30 seconds; complete in 4 



minutes. 

 M. micranlhum: Begins in a few seconds; complete in 1 J^ 



minutes. 

 M. conicum: Begins in 15 seconds; complete in 33-^ 



minutes. 

 M. commulatum: Begins in 15 seconds; complete in 2 



minutes. 

 M. racemosum: Begins in 30 seconds; complete in 3 



minutes. 

 M. compaclum: Begins in 30 seconds; complete in 2}^ 



minutes. 

 M. comosum: Begins in 30 seconds; complete in 3 minutes. 



