F. H. Williams—Synthesis of Hydrocarbons. "867 
the temperature was raised. 
considerably lower temperature was sufficient to generate the 
added to about a half liter of the filtrate. The mixture was 
boiled, and ammonia water nearly to alkaline reaction added ; 
the precipitate of hydrate of iron was filtered off, washed, heated 
with sulphuric acid and ether in a stoppered bottle, and shaken 
at intervals for two or three days. The ether layer was distilled, 
and a portion of the distillate allowed to evaporate spontaneously 
ona platinum dish left no residue; the lower layer was now 
added and distilled ; no oily layer was found on the water in 
the receiver, 
the solution still giving an acid reaction; the precipitate was 
filtered off, dried at 100° C., a portion heated in a closed tube. 
The chloride of calcium in the drying tube, through which 
the gas had passed more than three weeks, was dissolved in 
follows: There may be obtained by the solution of cast tron 
in an acid, besides gaseous bodies, which escape with the hydro- 
