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Mj.crochemina 1 ^x^inat j;mi , The studies wSi-e mads on fresh material. 

 Thm p^es of- epidermal tissue were immersed in different reagents and theh 

 examined under the microscope. 



The bodies presented the following reactions: 



In absolute alcohol, in ether, in chloroform, after a few moments of 

 immersion, they dissolved. 



In water at ordinary temperature they vacuolized slowly but did not 

 disappear , 



They dissolved in 10 per cent sodium chloride, in 10 per cent solution 

 of potassium nitrate, in alkali, and in very dilute acids. 



With solutions of potassium iodide they stain intensely brown, while 

 at the same time they vacuolize and, after the appearance of numerous vacuol'es, 

 disappear. 



liiTith the use of Millon's reagent (cold) j. the body assumes a rose color. 



Applying contemporaneously to the sections concentrated solutions of 

 sugar and sulphuric acid (Raspail'^s reagent), it dissolves instantly- As a 

 conseq.uence, one does not succeed in obtaining a clear reaction. 



Immersing the sections in a dctop of nitric acid, they take on a 

 yellowish color. 



Sudan III, Scarlet R, and tincture of Alkanna, no color results. 



With iron chloride and iron acetate in aqueous solution, they take 

 on a black$!Bh blue color after a short immersion. 



I7ith bichromate of potash in concentrated solution, they acq.uire a 

 distinctly reddish brown color. 



T/ith osmic acid, they turn black after a short time. 



Vith ammonium carbonate, potassium carbonate, and sodium carbonats, 

 they stain yellow, and, with the progress of the action of the reagent, there 



