Smith.] 50 [May 4, 
We have here, then, a compound in which three benzol groups have 
very probably combined, containing only carbon and chlorine. 
ANALYSES. 
Chlorine Determinations. 
I. The compound was dried over sulphuric acid and burned with ox- 
ide of lime, and the calcium chloride which was produced dissolved in 
nitric acid and the chlorine precipitated with silver nitrate. 
0.2181 Grm. substance gave .6928 Grm. silver chloride, corresponding to 
78.53% chlorine. 
II. .1035 Grm. substance gave .3829 Grm. silver chloride = 78.58% 
chlorine. 
III. 0.0868 Grm. substance gave .2765 Grm. AgCl = 78.57 % chlorine. 
IV. Finally, I fused a portion of the compound on a watch glass and 
then heated it with oxide of lime. 
.0893 Grm. sub, gave .2843 Grm. silver chloride = 78.75% chlorine. 
Carbon Determinations. 
I. .3629 Grm. substance dried at 75°C. and then burned with coarse lead 
chromate, yielded .0780 Grm. CO, = 21.41% carbon. 
Not any water was noticed in the calcium chloride tube and its weight 
had not increased. 
II. .2518 Grm. dried substance, burnt with lead chromate gave .0536 
Grm, CO, = 21.33% carbon. 
III. .1677 Grm. well dried substance gave .0361 Grm. CO, = 21.51% 
carbon. 
Several more combustions were made with about the same result. In no 
instance did the found percentage of water exceed 0.40%. This amount 
of moisture could have readily collected during the filling of the combus- 
tion tube. 
RESULTS. 
Calculated, Found. 
Cy = 252 = 21.44% Pee oH ins eee 2) Bh 
Cl,, = 923 = 78.56 % 78.57 — 78.58 — 78.538 — 78.75. 
ACTION OF ZINC AND SULPHURIC ACID UPON C,, Cl,,. 
About five grammes of the preceding compound were pulverized and 
dissolved in a mixture of alcohol and chloroform, and zinc and sulphuric 
acid added to this solution. The liberation of hydrogen gas was rather 
slow and to hasten it the flask containing the mixture was placed on a 
sand-bath, where a constant temperature of 60°C. was maintained for ten 
weeks, during which period there was a constant and brisk disengagement 
of hydrogen gas. The flask was now placed upon a water-bath and the 
alcoho] and chloroform removed by distillation. An impure oil remained 
as a residue and upon cooling solidified and was then taken from the flask 
and dissolved in a mixture of chloroform and alcohol. After removing the 
impurities by filtration, the solution was strongly evaporated and when 
cool the compound separated partly as an oil and partly in colorless tablets. 
