H.'EMANTHUS. 



441 



The reaction with sodium hydroxide begins in rare 

 grains in 1 minute. Complete gelatinization occurs in 

 less than 1 per cent of the entire number of grains and 

 the total starch in 5 minutes ; in about the same percent- 

 age in 15 minutes ; in about 1 per cent of the grains and 

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

 the same jiercentage of each in 45 minutes; and in about 

 the same percentage of grains and 3 per cent of the total 

 starch in 60 minutes. (Chart I) 95.) 



The reaction with sodium sulphide begins in rare 

 grains in 1 minute. Complete gelatinization occurs in 

 only rare grains and less than 0.5 per cent of the total 

 starch in 5 minutes; in about the same in 15 minutes; 

 in about the same percentage of grains and 1 per cent of 

 the total starch in 30 minutes; in about the same per- 

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

 45 minutes; and in about 1.5 per cent of the grains and 

 2.5 per cent of the total starch in GO minutes. (Chart 

 D96.) 



The reaction with sodium salicylate begins in half a 

 minute. Complete gelatinization occurs in 40 per cent 

 of the entire number of grains and 56 per cent of the 

 total starch in 5 minutes ; in about 97 per cent of the 

 grains and 98 per cent of the total starch in 15 minutes ; 

 and in practically all of the starch in 30 minutes. ( Chart 

 D97.) 



A small bubble appears at the hilum, which is about 

 the same as in H. katherince, but is less frequently 

 found inclosed within an enlarged fissure, and less often 

 expands to considerable size, than in H. magnificus. 

 The lamellae in the main body of the grain do not become 

 more distinct, about the same as in H. katherince, but 

 less distinct in some grains than in II. magnificus. A re- 

 fractive border is formed, the definition of the separate 

 lamella?, as well as the entire border from the rest of the 

 grain, is much more frequently about the same as in 

 //. katherince, but in a very small number of grains the 

 resemblance is close to H. magnificus. The methods 

 of gelatinization are the same as observed in both parents. 

 In most grains gelatinization follows the course described 

 in H. katherince; but in rare grains, as in H. magnificus, 

 the refractive border may become first very sharply de- 

 fined and then suddenly gelatinized without distortion; 

 and this is sometimes followed by complete solution of 

 the capsule. 



The gelatinized grains are swollen and distorted about 

 the same as in II. katherince, but more distortion than in 

 H. magnificus. Either partial or complete solution may 

 follow the gelatinization of the grain, more rapid solu- 

 tion in parts of a few grains than in H. katherince, but 

 in not nearly so many as in II. magnificus. With the 

 exception of a few grains, H. andromeda shows qualita- 

 tively a much closer relationship to H. katherince than 

 to H. magnificus. 



The reaction with calcium nitrate begins in rare 

 grains in 1 minute. Complete gelatinization has occurred 

 in about 0.5 per cent of the entire number of grains and 

 1 per cent of the total starch in 60 minutes. ( Chart D 98. ) 



The reaction with uranium nitrate begins in rare 

 grains in 1 minute. Complete gelatinization occurs in 

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

 the total starch in 60 minutes. (Chart D99.) 

 5 



Tfie reaction with strontium nitrate begins in rare 

 grains in 1 minute. Complete gelatinization occurs in 

 about 0.5 per cent of the entire number of grains and 

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

 in about the same percentage of grains and nearly 1 per 

 cent of the total starch in 15 minutes; in about 1 per 

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

 in 30 minutes; and in nearly 2 per cent of the grains and 

 2.5 per cent of the total starch in 45 and 60 minutes, 

 respectively. ( Chart D 1 00. ) 



The reaction with cobalt nitrate begins in very rare 

 grains in 1 minute. Complete gelatinization was not ob- 

 served in any grain among the entire number and the 

 process has begun in but rare grains, much less than 

 0.5 per cent of both the entire number and the total 

 starch, in 5 minutes; no apparent progress in 15 and 30 

 minutes; complete gelatinization occurs in rare grains, 

 less than 0.5 per cent, and 0.5 per cent of the total starch 

 in 45 minutes; about the same in 60 minutes. (Chart 

 D 101.) 



The reaction with cupper nitrate begins in rare grains 

 in 1 minute. Complete gelatinization was not observed 

 and the reaction had begun in rare grains, much less than 

 0.5 per cent of both of the entire number of grains and 

 of the total starch, in 5 minutes ; very slight progress in 

 15, 30, 45, and 60 minutes, until at the end of this period 

 complete gelatinization still occurs in but rare grains and 

 the process has begun in but few grains, much less than 

 0.5 per cent of both the grains and the total starch gela- 

 tinized. (Chart D 102.) Gelatinization of the rare 

 grains began at the distal end, accompanied by extension 

 of the capsule. In those grains in which a fissure extends 

 through the grain, and in which a proximal and a distal 

 end are scarcely demonstrable, the process proceeds more 

 rapidly at one end which presumably is the distal end. 



The reaction with cupric chloride begins in very 

 rare grains in 1 minute. Complete gelatinization wa3 

 not observed in any grains and the reaction has begun 

 in but rare grains, much less than 0.5 per cent of both 

 the entire number of grains and the total starch, in 5 

 minutes; no apparent change in 15 minutes; complete 

 gelatinization occurs in rare grains and has begun in 

 but few grains in 30 minutes ; slight progress in 45 min- 

 utes; complete gelatinization occurs in less than 0.5 per 

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

 the total starch in 60 minutes. (Chart D 103.) Gela- 

 tinization is observed in very few grains, but in those 

 affected the course more closely follows that noted in //. 

 katherince than in II. magnificus. 



The reaction with barium chloride begins in very 

 rare grains in 1 minute. Complete gelatinization occurs 

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

 and total starch in 60 minutes. (Chart D 104.) 



The reaction with mercuric chloride begins in very 

 rare grains in 1 minute. No complete gelatinization in 

 the entire number of grains was observed and the process 

 was begun in but rare grains, much less than 0.5 per cent 

 of both the entire number of grains and total starch in 

 5 minutes ; complete gelatinization still observed in but 

 very rare grains less than 0.5 per cent and about 0.5 per 

 cent of total starch in 15 minutes; very little if any 

 change in 30, 45, and 60 minutes, respectively. (Chart 

 D 105.) 



