336 MESSES. E. FRANKLAND AND B. F. DUPPA'S 



paraffin, tolerably soluble in water; '3765 grm. gave on analysis -2027 grm. baric sul- 

 phate, corresponding to 31 '66 per cent, of barium. The formula 



(CAyHHo 



CuH,eBa"Oe,or|^^^Ba" 



IcAyHHo 

 requires 32*08 per cent, of barium. 



A copper salt was also prepared. It is deposited from its aqueous solution in minute 

 light-blue scales, very sparingly soluble in water. 



Submitted to analysis, -2341 grm. gave "4045 grm. carbonic acid, "1561 grm. water, 

 and •0528 grm. cupric oxide. 



These numbers agree closely with the formula 



jCAyHHo 



Ci,H2eCu"Oe,or|^[^^Cu". 



ICAyHHo 



353-5 100-00 100-00 



The acid of the second ether, ethyl-amylhydr oxalic acid, is prepared bythe decomposition 



of ethylic ethyl-am ylhydroxalate with alcoholic potash. The acid is afterwards liberated by 



the addition of sulphuric acid in excess, and may then be dissolved out of the mixture 



by ether. On the evaporation of the latter, the acid remains as a thick oil gradually 



solidifying to a crystalline mass, which, however, did not appear to be in a fit state for 



the determination of its fusing-point. The barium- and silver-salts of this acid were 



prepared. They are both soluble in water; -1331 grm. of baric ethyl-amylhydroxalate 



gave, on decomposition with sulphuric acid, -0660 grm. baric sulphate, corresponding 



to 29"15 per cent, of barium, the formula 



(CAyHEto 



lO 



jCA, 

 ICO" 



'«'"'(C0< 



ICAyHEto, 



Ci8H3,Ba"Oe,or,^^QBa" 



requiring 28*41 per cent, of barium. 



-1891 grm. of argentic ethyl-amylhydroxalate gave on ignition -0722 grm. metallic 

 silver, representing 38-18 per cent. The formula 



(CAyHEto 

 • Ago 

 requu-es 38-43 per cent, of silver. 



C,H,,Ag03,or|^^5 



