- k-. 



The stains which I used are the following: Aniline red, gentian violet, 

 dahlia violet, aniline blue, malachite green, iodine green, methyl green, 

 thionine, methylene blue, saf ranine , neutral red, nirxosine, chrysoidine, 

 vesuvine. Bismarck brov.n. Congo red, and light green. 



Of these staining materials, aniline red, gentian violet, dahlia violet, 

 malachite green, iodine green, methyl green, thionine, methylene blue, safranin^ 

 neutral red, vesuvine, Bismarck brown, and light green were able to determine 

 in a very short time, by use of the most dilute solvtions and mthout any 

 previous fixation, the presence of tannin in the body in question. 



Nigrosine, on the contrary, Congo red, and aniline blue were not ab- 

 sorbed even in concentrated solutions. 



Development . The body in question does not participate in the phenomer'.v 

 of kariokinesis in the cells of the floral axis during their course of develop- 

 ment. It appears first in some and then in all the cells as a very minute, 

 little sphere, extremely refractile to light, immersed in the cytoplasm and 

 enveloped frequently by a fine, granulose substance of tannic character. 



Such spheres grow with the growth of the cells in which they occur and, 

 arriving at completed development, reach dimensions slightly inferior to those 

 of the nucleus. 



Later, namely, when the fowers begin to wither, one often observes in 

 these bodies noticeable degenerative phenomena; in fact, they lose their rotund 

 form, their homogeneous aspect, and assume irregular, varied forms, while there 

 appears in them mamerous vacuoles which give them a spongy appearance. 



Among these vacuoles, which are situated at the periphery, 'there often 

 appear in the form of a ball those which expand as if an internal pressure 

 ^vere to burst them. Not infrequently one finds twc vacuoles nsarly touching 



