188 PROCEEDINGS OP THE AMERICAN ACADEMY 



phenolate made from somewhat more than 6.1 gr. of phenol treated 

 with the sodic ethylate from 1.3 gr. of sodium. The sUght excess of 

 phenol was used to avoid the presence of sodic ethylate, and the salt 

 was added in suspension in alcohol. The mixture was then heated on 

 the steam bath under a return condenser for less than five minutes, 

 when it had turned bright green, but was perfectly clear, and upon 

 cooling solidified, since it became filled with loose woolly masses of 

 radiatina: needles looking like thistle balls ; this sudden solidification 

 of the solution as it cools is very striking. The crystals with the 

 residue from the mother liquors were washed with water (which took 

 up much sodic bromide), and crystallized from a mixture of alcohol 

 and benzol until they showed the constant melting point 175°, when 

 they were dried at 100° and analyzed. If benzol was not used in 

 preparing this substance, the action was only incomplete even after 

 boilino- for half an hour. The formation of sodic bromide instead of 

 sodic nitrite, and the green instead of red color, showed that this 

 action had gone differently from that with sodic ethylate or methylate, 

 and this was confirmed by the following analyses : — 



I. 0.2689 gr. of the substance gave on combustion 0.5823 gr. of 



carbonic dioxide and 0.0850 gr. of water. 

 11. 0.2439 gr. of the substance gave 0.5306 gr. of carbonic dioxide 

 and 0.0775 gr. of water. 

 III. 0.2448 gr. of the substance gave 18.6 c.c. of nitrogen at a tem- 

 perature of 23° and a pressure of 758.1 mm. 



Calculated for 



Cfj^c^u^ouNO^h. I. n. m. 



Carbon 58.89 



Hydrogen 3.07 



Nitrogen 8.59 8.55 



The substance was free from bromine. This action therefore has 

 gone entirely differently from any of the others studied in this paper, 

 consisting in the simple replacement of each bromine by one phenoxy 

 radical (CgH^O), and the substance is the trinitrophloroglucine 

 triphenylether. 



Properties of the Trinitrophloroglucine Triphenylether, 



Ce(NO,)3(C,H,0)3. 



This substance crystallizes in long very slender white needles, 

 matted together into globular woolly masses, which turn olive-brown 

 on exposure to the air. It melts at 175°, and is essentially insoluble 



