^15- 

 These little spheres tiirn brown on treatment with osmic acid, stain with 

 Sudan III, with Bcarlet E^ and with tincture of Alkanna, They do not present 

 the reactions of proteinaceous substances. As a consequence, they should "be 

 referred to as elaio spheres. 



Likewise in this species, in rare instances, one may find some colorless 

 cyanoplasts, which show all the reactions of tannin. 



Conclusions. 

 From the assjAmbly of facts aoove presented I believe that one may draw 

 the following conclTisions, limited naturally to those cases which i I studied: 



(1) The anthocyanine develops autonymously, 



(2) Anthocyanine does not form in ordinary vacuoles, nor is it derived 

 from a preexisting substance in solution in the cell sap, but is formed, on 

 the contrary, within a special organ which I have designated cyanoplast . 



(3) The cyanoplast originates directly from the protoplast by neofor- 

 mation . 



(U) The cyanoplast is void of proteinaceous substance and showsan in- 

 volucre the chemical nature of which is unknown and in which may be found tannin 

 substances. 



(5) Anthocyanine may be derived from substances belonging to the group 

 of tannins, since the presence of such substances is found in cyanoplasts in 

 which anthocyaoiine develops. 



(6) Certain substances extant within the involucre of the cyanoplast 

 may become transformed in the anthocyanine by means of special metabolic 

 processes. 



(7) External agents may suspend the transformation in the anthocyanine 

 of the substances resident in the cyanoplast and then it remains colorless. 



(g) The cyanoplast presents a definite development terminating in de- 

 generation and the spreading of its pigment through the cell cavity. 



