100 IOWA ACADEMY OF SCIENCES. 



trated as e. g., the barium salt. When the acid is dis- 

 solved ill a solution of sodium, potassium or ammonium 

 h3^droxide a deep yellow colored solution is obtained. 



Silver-2-nitro-4' phenyl ether carbonate AgOOC- 



CaH40CoH4.]Sr02 The silver salt w^as prepared by dissolv- 

 ing a portion of the acid in dilute ammonium hydroxide, 

 evaporating off the excess of ammonia and precipitating 

 with silver nitrate. It separates out in pinkish curdy 

 lumps. It is sufficiently soluble in water to yield a slight 

 turbidity when hydrochloric acid is added to the solution. 

 When pure and dry it is very stable and is not decomposed 

 by direct sunlight, even when exposed for several hours. 

 It is insoluble in inorganic solvents in general, and melts 

 with decomposition at about 220^ C. One part of the salt 

 is soluble in 2180 parts of water at ordinary room tempera- 

 ture. 



Barium-2-nitro-4'-phenyl ether carbonate Ba [OO.C,- 



H40C,H4. N0J-|-1|II,0. The barium salt was prepared 



by adding a little more than the theoretical quantity of 

 barium hydroxide to a strong water solution of the ammo- 

 nium salt obtained as given above in the manufacture of 

 the silver salt. The excess of barium was precipitated 

 from the solution by passing in a stream of carbon diox- 

 ide. The salt crystallizes out from a hot water solution on 

 cooling in pearly flesh-pink scales. One part of the salt 

 dissolves in 122 parts of boiling water and in 948 parts of 

 cold water. Before making an analysis it was dried over 

 sulphuric acid for several days and then dried in the air 

 bath for three or four hours at 100-110° C. Between 

 80 and 100 degrees it took on a much deeper hue, which 

 seemed to be permanent and lost water corresponding to 

 li molecules. Two analyses resulted as follows: 



Calculated for BaCCisHsNOfje+Pi^HcO. I 11 

 Barium 19.87 per cent . 19.32 per cent 19.08 per cent- 

 Loss of water 7 64 7.35 7.03 



2-amido-4'-m ethyl phenyl three H.N.aH.OCoH^.CHa 



The amido ether was prepared by dissolving the previ- 

 ously described phenyl ether in alcohol and water and reduc- 

 ing with tin and hydrochloric acid while warming on the 



