12 • 

 (3) Tliey remain -ancliijagad in a 20 por cent solution of magnesium sul- 

 phate . 



\4) In methyl greon (used on sections made from fresh material as 

 well as on those fixed hy imniersion in absolute alcohol) they show no color. 



(fi) ViCith the mixture methylene blue plus fuchsine S [ 1 volime 

 (250 can, Hge plus 0.25 g. fuchsine S) plus 1 volume (250 com. H2O plus 

 0.25 g. methylene blue) ] used on sections treated for 12 houEs in 5 per 

 cent hydrochloric acid and then in absolute alcohol, the bodies and. the 

 nucleoli stain intensely red; the chromatin of the nucleus blue, the plasma 

 of the nucleus brilliant red, 



(6) In sections treated with carmine acid the body and the nucleoli 

 remain colorless and the chromosones stain red. 



(7) Submitted to thb action of glycerinatsd pepsin for a period 

 of 20 hours, the bodies and the nucleoli swell up and are not dissolved. 



Such react xcno lead one to the ccnclx^iion tlio'.„ the fundamental sub- 

 stance of 'che elaiopl-oti behaves towards the a";cve-i'— med re:-'-^3:its like 

 the substance of nucleoli. 



As already said, the eiaioplasts enco'ontsred are found under the 

 forms above described in the cells of the epidermis of the scales of dormj.r.t 

 bulbs; in activel^^ fujictioning biilbs; Ij^-Jilitt <(ian^aGry4.-tlieyiaeparate or 

 appear in various st^^-ges of a dissolutional process (Pl. XIII, fig. 3> £.) « 

 while in long cellfa they are accompanied by new elaioplasts (Pl. XIII, fig. 

 3, e) . These last are -of iiotaole size, colcrlcs&, and refractile, and 

 result from the union of s.-i-.ll spl"i:.r8b, iiipcsed lik'e grapes. Each of these 

 little spheres consists of a plasnatic stroma and cf an oily substj.ncs. The 

 stroma shows all the reactions inaic^.ted as characteristic of proteiaaceous 

 substance. And, where the secticns are fixed in an alcoholic solution of 

 corrosive subliuiate, they ma^- be stainel ,->ith fuchsine, er-throsine, and eosine, 



