at first homogeneous, then aggregated or grumose, is finally granular, 

 having a very irregular forra frequently with tree-like ramifications 

 (Pl. XV, fig. 1), It is rofractile and presents yellow reflections. 

 In its interior it presents in turn one or more central glotules, which 

 are at the starting point of the tree-like ramif icacion. Such forms show 

 all the reactions of the proteinaceous substance and are encountered in 

 epidermal cells of all parts of the open flovjer but absent in the epidermis 

 of the leaves and of the floral axis, in the tissue of the lobes of the 

 anther as well as in the stem and in the pollen grains. It is also useless 

 to seek for then in the seed, in the ovule, in the root tips, and in the 

 deeper tissues of all the other organs. 



