60 



HISTOLOGIC PROPERTIES AND REACTIONS. 



With gentian violet and safranin N. dainty maid is the 

 same as N. elegans, while N. queen of roses is the same 

 as N. crispa. In the temperature reactions the hybrids 

 are intermediate, N. dainty maid being closer to N. 

 elegans, and N. queen of roses closer to N. crispa. N. 

 dainty maid is, on the whole, more closely related in 

 these reactions to the pollen parent, and N. queen of 

 roses to the seed parent. 



Table A 10 shows the reaction-intensities in percent- 

 ages of total starch gelatinized at definite intervals 

 (minutes) : 



TABLE A 10. 



TABLE A 10. Continued. 



VELOCITY-REACTION CURVES. 



This section deals with the velocity-reaction curves of 

 the starches of Nerine crispa, N. elegans, N. dainty 

 maid, and N. queen of roses, showing the quantitative 

 differences in the behavior toward different reagents at 

 definite time-intervals. (Charts D 190 to D 210.) 

 Among the conspicuous features of these charts are : 

 (1) The marked closeness of all four curves, except- 

 ing in the reactions with chloral hydrate and potassium 

 sulphocyanate, in which there is a marked tendency to 

 separation, especially in the former, although in the 

 general course of curves the characters of the reactions 

 agree. In the reactions with pyrogallic acid, sulphuric 

 acid, hydrochloric acid, potassium hydroxide, sodium 

 sulphide, calcium nitrate, copper nitrate, cupric chloride, 

 barium chloride, and mercuric chloride gelatinization 

 occurs either with such rapidity or slowness that there is 

 no satisfactory differentiation, such differences as are 

 noted falling within the limits of error of experiment 

 or being unimportant. Even in some of the other reac- 

 tions the differences are small. 



