31 



Pigaiiaiia- laiilolia clearly shows elaioplasts in the epidermis of the 

 leaves, although they exhibit no- relationship to calcitan oxalate within the 

 cells concerned ♦ Even though I have made observations on the aforeiuenticnod 

 Vanilla sp, neither in this one nor in Ornithogalum vimbellattim and Q. nutans 

 could I demonstrate a single trace of diffraction in the elaioplasts, although 

 I examined them in all possible stages of their development. 



With the opinion of this last author I am in agreement also because I 

 have never encoiintered crystals of calcium osalate in relation to the 

 elaioplasts in the nianerous species in which I followed, to the last stages 

 of their Cthe elaioplasts*] development. 



The Origin and Morphological and Biological Significance of the 



Elaioplasts. 

 Eaciborski admits that the elaioplasts owe their origin to a secretion 

 of cytoplasm. On the contrary, I contend that they are of nuclear origin. 

 Such an hypothesis is supported both by the fact that the elaioplasts appear 

 during their first stage close to the nucleus and by the fact that the 

 chemical nature of their substance redcts toward solvents and staining reagents 

 like the substance of the nucleus, as I have established. 



So far as concerns the morphological significance of the elaioplasts we 

 l}ave the following opinions: According to V/akker, it [the elaioplast] is 

 probably derived from metagiurphosis of the chloroplasts . This opinion, as 

 Eaciborski observes, is opposed ^y the fact that they have diverse methods of 

 multiplication. 



