118 ON SOME PROTEIN CRYSTALLOIDS. 



crystalline rods are found in the cytoplasm. I believe the gran- 

 ules are also crystalline in form ; but they are usually so very 

 small that I have not satisfied myself on this point (Figs. 4 and 5, 

 cr. and crk.). 



Out of fifty cells of this stage examined and drawn, there were 

 as follows : — 



Hairs with more than two nucleoli ... 9 



Hairs with two nucleoli ... ... 19 



Hairs with a single nucleolus ... 22 



Of the twenty-two cells containing one nucleolus, eighteen had 

 erythrophilous granules and crystalloids outside the nucleus ; two 

 of the cells with two nucleoli showed them, while the cell with 

 three nucleoli only exhibited a few granules. 



In the ovaries of opening Jiowers the hairs are at their fullest 

 state of development (Figs. 6 to 9), being often of very large 

 size (Figs. 8 and 9). They stain intensely blue, owing to their 

 exceeding richness in protoplasm ; while the crystalloid bodies are 

 conspicuous from their large size, and the brilliancy with which 

 they take the red dye. The crystalloids now often resemble at 

 first sight some of Zimmermann's figures of single large irregularly 

 shaped ones, but with careful focussing they are seen to consist of 

 conglomerations of smaller, generally elongated crystals (Figs. 8 

 and 9, cr.). Long, slender forms also occur singly, and show in 

 transverse section an oblique rhomboidal outline. Occasionally 

 they are bent or curved, and not infrequently one may observe 

 them bordering a vacuole (Fig. 10). I examined and drew fifty 

 hairs from the ovary of an opening flower, and of these there were : 

 Cells containing more than two nucleoli .. i 

 Cells containing two nucleoli ... 7 



Cells containing a single nucleolus ... 42 



All these cells, except one containing two nucleoli, had gra- 

 nules and crystalloids in great profusion. The cell with three 

 nucleoli has been represented in Fig. 8, and two of its nucleoli are 

 seen to be very small. 



In fertilised ovaries, when the ovule has undergone its first 

 division, the few hairs which still retain their normal size and shape 

 show some crystalloids ; but the protoplasm and nuclei begin to 

 exhibit the characeristtic affinity of degenerating cells for acid 



