666 



SCIENTIFIC RECOED FOR 1885. 



Formula. 



COOH.C.COOH 



A 



H2C— CH.COOH 



CH.COOH 



A 

 COOH. HC— CH.COOH 



COOH.C.COOH 



A 



COOH. HC— CH.COOH 



CH3.CO.CH 



C6U5.CO.CH 



I 

 -CH, 



CH2 



I 

 CH. 



CH3.C0.C.C00H 



A 



HoC— CHa 



CHfi.CO.C.COOH 



A 



H.jC— CHa 

 CHs.CO.C.i OOH 



A 

 H.C— CH.CH3 



CsHs-CNOH 

 CH3Br.CH0.CH 



CHi 

 -CH2 

 ,COOH 



COOH 



C6H5.CO.CH2.CH,.CH2.Br. 

 CfiHe.CH.^ COOH 



CsHs-CHj^^ \~COOH 



Name. 



Trimethylei ietricarl)Oxv 1 i c acid 

 (l:l:>2). 



Triinethyleaetiicjirboxy lie acid 

 (1:2: 3). 



Trimethylenetetracarboxylic 

 acid (] : ] : '2 : 3). 



Acetyitrjmethylene 



Benzoyltrimetbylene 



Acetyltrimeth^ lenecarboxylic 

 acid. 



Benzoyltrimethyleiiecarboxvlic 

 acid (1:1). 



AcctylmetbyltiimethyleuHcar- 

 boxylic acid (1 : "2 : 1). 



Benzoyltrimetbylciieoxiiije 



Meltiug 

 point. 



184° 



145-lf)0O 



95-1000 



Liquid 



Boiliui; 



poiut 



(720"""). 



112-1130 



Liquid ..239-239.5° 



Liquid . . | 



148-149^^ ' 



Liquid 



86-870 



y-Bromethyhualonic acid II6-II70 



ftj-Broiuopropyl phenyl ketoue.j 37-39o 



I 

 Dibenzylmalonic acid 1 170-172O 



Ethereal salts of many of these bodies were also prepared and studied. 



By heating hydroxylamine and hydrochloric acid with benzoyltrime- 

 thylene, in a sealed tube, a complicated reaction sets in, yielding a deep- 

 blue solution with an intense brick-red fluorescence. This solution 

 proved to contain two distinct bases; that soluble in ether was found 

 to have the constitution CsoHasXgO,. It is easily soluble in acetone, ani- 

 .line, and nitrobenzene, more sparingly in alcohol, ether, and in benzene. 

 If the brownish-red alcoholic solution be treated with zinc dust and 

 ammonia, it is reduced and becomes colorless; on agitating with air it 

 is reoxidized. The salts of this base are easily obtained, and form deep- 

 blue solutions with a most magnificent brick red fluorescence. The hy- 



