364 fF. H. Wilitams—Synthesis of Hydrocarbons. 
rated and non-saturated series; and these experiments, which 
restricted time obliges me to terminate for the present, afford 
the hope that some at least of those bodies may be obtained in 
a state of purity by operating with larger quantities. The ma- 
terial for the investigation was white spiegel eisen containing 
a very high percentage of carbon. 
Of the volatile products, only those which could be separated 
from the hydrogen by condensation in a freezing mixture or 
by combination with bromine were examined, and those which 
could not be separated from the hydrogen by these means were 
lost. The compounds of carbon remaining in the liquid after 
the solution of the iron were collected. 
The following apparatus, after several trials, was found the 
most convenient for the treatment of the iron with an acid, and 
drawn out in such a way as to leave a small-sized tube three 
s end was 
pushed through the hole in the rubber stopper until the shoul 
der of the tube rested on the rubber; the bid co 
tubes were stayed to the side of the cask with Ie 
To the small lower ends of the tubes projectin 
bottom of the cask, were attached small rubber tu 
Y spring-clips. i 
The faber wid of each tube was closed by a stoppet capo 
two perforations. Through one of these passed a sm t 
tube, bringing the gas nearly to the lower end of the pon 
through the other a small tube; which took the gas tot In this 
condensing tube, was passed just through the stopper: 
es cl 
ube; 
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