< RINTJM. 



55 



reactions with nitric acid, potasium hydroxide, and po 

 tassium Bulphocyanate reactivity during the first < r > min- 

 utes is distinctly higher in the hybrid than in C. 

 zeylanicum. 



(-,') As the reactiona proi eed the ti ndency, n ith two 



exceptions, is for the hybrid curvea to l ome well 



rated from those of I . '.eylanicum, becoming interme 

 dial.', yet keeping closer to this parent than to V. 

 longifolium. The starch therefore man!!, ts the 

 (i\e properties of both parents, but is influenced dis- 

 tinctly more by the high resistant properties of C. 

 zeylanicum than by the relatively low resistant properties 

 of 0. longifolium. The degrees of separation of the tlrree 

 curves vary remarkably in the different reactions. In 

 some reactions they are to a notable extent separated, 

 showing correspondingly wide differences in reaction- 

 intensities of all threi starches, aa is .specially mi 

 in the reactions with nitric acid, hydrochloric acid, 

 potassium hydroxide, potassium iodide, potassium sul- 

 phocyanate, sodium hydroxide, and sodium sulphide; in 

 others, the three curves tend to be comparatively close, 

 as in especially the sulphuric-acid reaction. In others 

 there is marked tendency for the curve of C. longifolium 

 to be separated from those of C. zeylanicum and the 

 hybrid, the two latter inclining markedly toward one 

 another, as in especially the reactions with chromic acid, 

 potassium sulphide, sodium salicylate, calcium nitrate, 

 uranium nitrate, strontium nitrate, cobalt nitrate, cop- 

 per nitrate, cupric chloride, barium chloride, and mer- 

 curic chloride. In other reactions various grada 

 of relationship exist between the foreg >ups. The 



comparative slowness of the 0. kircape reactions appears 

 to be due in some cases to the high resistance of the 

 starches during particularly the earlier period of the 

 reactions, as for instance, in those with chromic acid, 

 potassium sulphocyanate, and sodium salicylate. In cer- 

 tain other reactions the resistance during the same period 

 is low. 



The best period for the differentiation of the star 

 is in most of the reactions at the end of 30 minuto 

 eluding here those with chromic acid, nitric acid, p 

 sium hydroxide, potassium iodide, and sodium salii ; 

 in a few at the end of 15 minutes, as in those with pyro- 

 gallic acid, sulphuric acid, hydroi hloric acid, and potaa 

 smm sulphocyanate; in others at tin' end of 60 minutes, 

 as in those with chloral hydrate, calcium nitrate, uranium 

 nitrate, strontium nitrate, cobalt nitrate, copper nitrate, 

 cupric chloride, barium chloride, and mercuric ch] 

 In some of these reactions the differences between the 

 figures for C. zeylanicum and C. kircape are triflin; 

 within the limits of error, as in the reactions with chloral 

 hydrate, potassium sulphide, barium chloride, and mer- 

 curic chloride; and in certain others the variatioj 

 unimportant, as in those with chromic acid, potassium 

 sulphide, uranium nitrate, copper nitrate, and cupric 

 chloride. 



Reaction-intensities of the Hybrids. 



This section deals with the intensities of 



the hybrid aa regards sameness, intermediateness, excess 

 and (ieii.it m relation to the parents. (Table A - 

 Charts D 148 to D 168.) 



The reactivities of the hyl 

 of tlie geed parent in the reaction^ with chloral hydrate, 

 • nun sulphide, cobalt nitrat Lrium chloride; 



p.. Hen parent with gentian \ 

 the same aa those of both parent- in none; in! 

 in those with iodine, temperature, chromic a id. pyi 

 lie acid, nitric acid, sulphuric acid, hydrochloric acid, 

 potassium hydroxide, potassium iodide, potassium sul- 

 phocyanate, sodium hydroxide, sodium sulphide, calcium 



nitrate, uranium nitrate, strontium nitrat r ni- 



le, and mercui 



to tb> nt ; and in several being nearly t! ■ 



ition and 

 both beii it; and tli n the 



sodium d parent. 



The followii immarj of th 



lie- : San. ;, 1 ; 



.nil.- a- both parents, 0; int 

 t, 1. 

 The tendency to int. 



and it is obvious from these 

 that the pollen parent h 



little influence on the prop. h of the 



hybrid, the reverse of what 



iug set, in which ('. zeylanicum is the pollen parent, 

 while in this set this Speciea is the seed par.-!.!, from 

 which it seem-, that C. zeylanicui 

 whether seed or pollen, in determining the prop 

 of the hybrid. 



Composite Curves oi the Reai hon-i 



This section deals with t | the 



reaction-intensities, showing the differentiation of the 

 starches id' Crinum zeylanicum, V. longifolium, an 

 kircape. (Chart 1 



The most conspicuous features of the char; 

 summed up as follows ; 



(1) The very distinct separation of the curves of 

 C. zeylanicum and C. kircape from the curve of C. ' 

 folium, excepting in the reactions with polarizat 

 iodine-, gentian violet, safranin, and temperature. 



(2) The intermediate position of the curve of the 

 hybrid (except in the reactions with polarization, i 

 safranin, and sodium salicylate and its relative 



with few exceptions, to the curve of C. zeylanicum. In 

 the reactiona with safranin, chromic acid, and pyrogallic 

 acid the curve is closer to that of C. longifolium; 

 in the gentian-violet reaction it is the e 



• folium. 



(;i) In (,'. zeylanicum the very high reaction with 

 polarization; the high reactiona w I 

 safranin, and sulphuric acid ; the n - with 



chromic acid, pyrogallic acid, and sodium salicylate; the 

 low reactions w ith iodine and tempi ratun 

 the very low reactions with chlor 

 hydrochloric acid, potassium hydroxid. 

 potassium sulphocyanate, potassium sulphide, sodium 

 hydroxide, sodium sulphide, calcium nitrate, uranium ni- 

 trate, si rontium ni .alt nitral 

 cuprii . barium chloride, and mercuric chl 



mgifolium the very high r with 



polarization, pyrogallic acid, nitric acid, sulphuric acid, 

 hydrochloric acid, potassium hyd ssiuni 



iodide, potassium sulpho . and sodium hydroxide; 



the high reactions with gentian \ ranin, el.; 



. sodium salicylate, and strontium nitrate; the 

 erate n acl ions with iodine and -odium sulphidi 



ma with temperature, chloral hydra! -mm 



sulphide, calcium nitrate, uranium nitrate, 

 . cupric i 



with barium i 



(5) In ('. kircape the very high reaction with polar- 

 ization ; the high i 

 chromic acid, pyro 'id sulphi I ; the 



itlll'e. llitl 



chloric a. id, potassium hydroxide, 



cyanate, and sodium salicylate : and the very low 



with chloral hydrate, potassium iod i buI- 



