. Transactions of the odontological society of Great Britain. free nitrogen from excess of heat, and often thebubbling over of the fused nitrate, that somtimes solidifies inthe tube of the flask, causing the latter to burst, which is oftenattended with serious injury to the operator, as it may contain3 or 4 lbs. of fusing nitrate of ammonia at a temperature nearto 400° Fahr. It also has great advantages over others as thereis no need for disconnecting the tube of the flask, because anyvacuum formed in the latter is supplied with air drawn throughthe whistle into the 3-necked Woulffes bottle fl
. Transactions of the odontological society of Great Britain. free nitrogen from excess of heat, and often thebubbling over of the fused nitrate, that somtimes solidifies inthe tube of the flask, causing the latter to burst, which is oftenattended with serious injury to the operator, as it may contain3 or 4 lbs. of fusing nitrate of ammonia at a temperature nearto 400° Fahr. It also has great advantages over others as thereis no need for disconnecting the tube of the flask, because anyvacuum formed in the latter is supplied with air drawn throughthe whistle into the 3-necked Woulffes bottle flask. And beside^these, it saves much trouble of moving the gas and watchingthe whole time it is being made, and also ensures the purity ofthe gas (, if the nitrate ammonia be pure). With an appa-ratus of this kind and 4 lbs. of nitrate of ammonia 100 gals, ofgas lias been produced, without any attention more than startingand turning out the gas at the end, in 4 hours. KHO Fe. SO. 4. M »? PORT e: rs APPARATUS FOR MAKING NITROUS OXIDE GAS ?^ M^i. H O. j&jDanL ScTut. Great Queen Stjreet Lomlftransactionsofod01lond
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectdentist, bookyear1868
