366 FE. A. Williams—Synthesis of Hydrocarbons, 
A portion of the hydrocarbons was distilled in a small flask 
fitted with a thermometer. The vapor began to go over at 
93° C., the temperature rose steadily to 185°, where it paused 
slightly, thence to 155°, which seemed to be the limit. The 
larger portion of the liquid distilled over at 135° C. ere 
was no decomposition or disengagement of chlorhydric acid. 
The few drops left in the flask had a slight acid reaction. 
romides, after being treated several times with dilute 
caustic soda, was washed with water until they gave no reaction 
with litmus paper; they were then weighed. 
They were allowed to stand over night with a small quantity 
of solid caustic potash; in the morning they were poured into 
a flask and heated until the caustic potash melted. Under this 
treatment the liquid changed from a dirty milky to a dark, not 
very clear, vinegar color. 
The bromides were distilled from a flask through a Liebig’s 
condenser cooled by water. A thermometer inserted through 
the cork of the flask gave the following readings. The tem- 
perature rose from 20° slowly but steadily to 120° C, more 
slowly from 120° to 180°, still more slowly 180° to 140°, a 
barely perceptible motion 140° to 145°, stopped some time at 
46°, motion of the mercury could hardly be seen from 146 
to 1485°, stopped some time at 148°, motion could not 
be appreciated from 148°5° to 149°5°, stopped at 149°5° a short 
time, rose slowly 149°5° to 151°, rapidly 151° to 158°, slowly 
158° to 168°, rapidly 168° to 169°, slowly 169° to 176°, less 
slowly 176° to 179°, when the lamp was taken away, as brom- 
hydric acid was given off. About four-fifths of the liquid had 
distilled over. : 
In another experiment using the same acid with German 
on eisen, kindly furnished by the Bay State Iron Works, 
2778 grams of iron were dissolved, and 15 grams or ‘54 per cent 
of liquid hydrocarbons were obtained; also 68°6 grams bro- 
mides. 
In this experiment all residues from the retort, consisting . 
graphite, silica, &., were collected on a large filter; these Tes! 
dues were placed with the filter and about a liter of water a 
flask and distilled. There came over and was condensed ri 
the steam a clear, yellow, oily liquid, which was collected 4 
the surface of the water and weighed 4:37 grams or ‘15 pet pon 
of the iron dissolved ; nearly all of this came over with the 
half liter of distillate. : 
In a third experiment, using the same iron as 10 th et: 
but instead of muriatic, dilute sulphuric acid, one. part to it 
of water, 1691 grams of iron were dissolved ; 1°8 grams, al 
per cent, of hydrocarbons were condensed in the freezing tudes 
the bromides weighed 94-7 grams. 
e second, 
