PROOFS OF THE PROPERTIES OF NITROUS GAS.

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Experiment VI.

Nitrous gas tinges the Jiame of turning bodies green.

Fill a wide-mouthed bottle with a mixture of one part of ni-trous gas, and four of hidrogen gas; set fire to it with a lightedtaper, and the mixture will burn with a green flame.

If a lighted taper be immersed in nitrous gas, it exhibits agreen flame before the taper becomes extinguished.

Experiment VII.

Nitrous gas is unfit for maintaining the comlustion of the greaternumber of turning todies.

Fill a receiver with nitrous gas, and let down into it a burningtaper; the taper will instantly be extinguished; the same thingwill happen to ardent spirit, oils, kc. though burning with avivid flame.

That nitrous gas however is capable of supporting the com-bustion of other bodies will be obvious from the following ex-periments :

Experiment VIII.

Ascension of pyrophorus in nitrous gas.

Place some new-made pyrophorus in a copper spoon, and in-troduce it into a receiver filled with nitrous gas; the pyrophoruswill instantly take fire and the volume of the gas will become di-minished.

Rationale. ..The pyrophorus effects a real analysis of thegas, it subtracts its oxigen and leaves its nitrogen behind; henceif the remaining air be examined it will be found that it renders