514 



DATA OF PROPERTIES OF STARCHES OF PARENT- AND HYBRID-STOCKS. 



cent of the grains and 6 per cent of the total starch in 60 

 minutes. (Chart D 240.) 



The hilum and lamella? are as distinct as in N. sar- 

 niensis var. corusca major. Gelatinization begins at the 

 hilum as in both parents, and the reaction in the great 

 majority of the grains is the same as that described in 

 N. sarniensis var. corusca major, and in a few is the 

 same as that described for part of the grains of N. curvi- 

 folia var. fothergilli major. The gelatinized grains are 

 large and the majority are as distorted as in N. sarniensis 

 var. corusca major. N. glory of sarnia shows qualita- 

 tively a somewhat closer relationship to N. sarniensis 

 var. corusca major than to N. curvifolia var. fothergilli 

 major, but both the parents and the hybrid exhibit a very 

 close relationship. 



The reaction with potassium sulphide begins imme- 

 diately in a few grains. Complete gelatinization occurs 

 in about 1 per cent of the entire number of grains and 

 10 per cent of the total starch in 5 minutes ; in about 24 

 per cent of the grains and 33 per cent of the total starch 

 in 15 minutes; in about 41 per cent of the grains and 

 52 per cent of the total starch in 30 minutes; in about 

 48 per cent of the grains and 67 per cent of the total 

 starch in 45 minutes; in about 50 per cent of the grains 

 and 61) per cent of the total starch in 60 minutes. (Chart 

 D 241.) 



The hilum and lamellae are distinct as in N. sarniensis 

 var. corusca major. Gelatinization, as in the parents, 

 begins at the hilum. In a large majority of the grains 

 the process is the same as that described under N. sar- 

 niensis var. corusca major, except that there is more As- 

 suring and granule formation than in those grains, and 

 in a few it is the same as in N. curvifolia var. fothergilli 

 major in which there was even less granulation than in 

 N. sarniensis var. corusca major. The gelatinized grains 

 are large and thin-walled and as distorted as in N. sar- 

 niensis var. corusca major. N. glory of sarnia is some- 

 what closer, qualitatively, to N. sarniensis var. corusca 

 major than to N. curvifolia var. fothergilli major, al- 

 though both parents and hybrid closely resemble one 

 another. 



The reaction with sodium hydroxide begins in a few 

 grains in half a minute. Complete gelatinization occurs 

 in less than 0.5 per cent of the entire number of grains 

 and total starch in 5 minutes; in about 0.5 per cent of the 

 grains and 1 per cent of the total starch in 15 minutes ; 

 in about the same percentage of the grains and 2 per cent 

 of the total starch in 45 minutes ; in about 1 per cent of 

 the grains and 3 per cent of the total starch in 60 minutes. 

 (Chart D242.) 



The reaction with sodium sulphide begins in rare 

 grains in 2 minutes. Complete gelatinization occurs in 

 less than 0.5 per cent of the entire number of grains 

 and total starch in 5 minutes ; in less than 0.5 per cent of 

 the grains and total starch in 15 minutes; in about the 

 same percentage of the grains and total starch in 30 

 minutes; slight advance in 45 minutes; in less than 0.5 

 per cent of the grains and 2 per cent of the total starch 

 in 60 minutes. (Chart D 243.) 



The reaction with sodium salicylate begins in 1 min- 

 ute. Complete gelatinization occurs in about 51 per cent 

 of the entire number of grains and 74 per cent of the total 

 starch in 5 minutes; in about 92 per cent of the grains 

 and 97 per cent of the total starch in 10 minutes ; in about 



97 per cent of the grains and 99 per cent of the total 

 starch in 15 minutes. (Chart D 244.) 



The hilum becomes more distinct than in either 

 parent, and the lamella? are as distinct as in N. sarniensis. 

 var. corusca major, but more distinct than in N. curvifolia 

 var. fothergilli major. A narrow refractive band, which 

 is as refractive as in N. sarniensis var. corusca major, 

 is formed about the margins of the grains. Gelatiniza- 

 tion, as in N. curvifolia var. fothergilli major, may with 

 almost equal frequency begin first at either the proximal 

 or the distal end, but the progress of gelatinization is 

 usually rather closer to that described under N. sar- 

 niensis var. corusca major, as the most resistant part of 

 the grain is much nearer the distal end than in N. curvi- 

 folia var. fothergilli major, and there is not so much 

 infolding and invagination of the capsule as in those 

 grains. The gelatinized grains are large and somewhat 

 more distorted than in N. sarniensis var. corusca major, 

 but less than in N. curvifolia var. fothergilli major. 



In this reaction N. glory of sarnia shows qualitatively 

 a closer relationship to N. sarniensis var. corusca major 

 than to N. curvifolia var. fothergilli major. 



The reaction with calcium nitrate begins in rare 

 grains in 2 minutes. Complete gelatinization occurs in 

 less than 0.5 per cent of the entire number of grains and 

 total starch in 5 minutes ; in less than 0.5 per cent of the 

 grains and total starch in 15 minutes; in about 0.5 per 

 cent of the grains and 1 per cent of the total starch in 30 

 minutes ; in about the same percentage of the grains and 

 2 per cent of the total starch in 45 minutes ; little if any 

 further change in 60 minutes. (Chart D 245.) 



The reaction with uranium nitrate begins in a few 

 grains in 2 minutes. Complete gelatinization occurs in 

 less than 0.5 per cent of the grains and total starch in 5 

 minutes; in less than 0.5 per cent of the grains and 1 

 per cent of the total starch in 15 minutes; in about the 

 same percentage of the grains and 2 per cent of the total 

 starch in 30 minutes; slight advance in 45 minutes; in 

 about 1 per cent of the grains and 4 per cent of the 

 total starch in 60 minutes. (Chart D 246.) 



The reaction with strontium nitrate in a few grains 

 begins immediately. Complete gelatinization occurs in 

 about 1 per cent of the entire number of grains and 10 

 per cent of the total starch in 5 minutes; in about 33 

 per cent of the grains and 73 per cent of the total starch in 

 15 minutes; in about 58 per cent of the grains and 85 

 per cent of the total starch in 30 minutes; in about 71 

 per cent of the grains and 87 per cent of the total starch 

 in 45 minutes ; in about 75 per cent of the grains and 90 

 per cent of the total starch in 60 minutes. (Chart D 247.) 



The reaction with cobalt nitrate begins in rare grains 

 in 1 minute. Complete gelatinization occurs in much 

 less than 0.5 per cent of the entire number of grains 

 and total starch in 5 minutes; still in less than 0.5 per 

 cent of the grains and total starch in 15 minutes; in about 

 0.5 per cent of the grains and 1 per cent of the total starch 

 in 30 minutes; little if any further advance in 45 and 

 60 minutes, respectively. (Chart D 248.) 



The reaction with copper nitrate begins in a few 

 grains in 2 minutes. Complete gelatinization occurs in 

 less than 0.5 per cent of the entire number of grains 

 and total starch in 5 minutes; in less than 0.5 per cent 

 of the grains and 1 per cent of the total starch in 15 

 minutes ; in about the same percentage of the grains and 



