13 



The oily substance is resistant to the action of concentrated hydro- 

 chloric acid, of cicetic acid, of a 50 per cent caustic potash solution, and of 

 chloral hydrate. It is easily soluble in alcohol, ether, chloroform, xylol, 

 and benzine. It becomes black with osmic acid and ultimately stains with Sudan 

 III, Scarlet R^ alkanine, and cyanine. 



Similar elaioplasts in the adult stage are fcJnd in non-determined 

 positions, which have no relation to the cell nucleus. They are er.doued, 

 in aaaiticn to =- ^lasoive niovement impressed, upon them by the cytoplasmic 

 stre^amir-g, with a movement ol •:".--sir o<vn. They appear, in fact, to cross the 

 cell cavity, to arrive a," z.ze .vj,ll, heoiui/:e for a fe>v racments, then recross 

 t".-.e cell by returning to the point from .vhich they departed. Such a movement 

 is sometimes sj-ow, sometices rapid, and often interrupted by a rest of greater 

 or less length. Contemporaneously with the movement of translation, they 

 show a rotatory movement. 



Besides those which appear in the bulbs, elaioplasts are found in the 

 epidermal tissues of the ovary. 



They, in open flowers, are of spheroidal and irregular form, resulting 



and dimensions 

 from the union of colorless or pale yello\5r spherical bodies, the number/ of 



which are variable. Their size is often very considerable, since in complete 



development they often approach and even surpass, the dimensions of the 



nucleus. They have a development similar to that of the elaioplasts of the 



Liliaceae, described by Raciborski. In their senile stage their greatest 



degree of refractility diminishes and they appear sluggish. 



