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Mr de la Place and I deflagrated a convenient quantity of nitre and charcoal in an ice apparatus, and found that twelve pounds of ice were melted by the deflagration of one pound of nitre.

They deflagrate when sprinkled on fused nitre, forming carbonate of potash.

The salts deflagrate and a luminous flame envelops the ordinary feeble arc-flame.

The salts containing nitric acid deflagrate when heated on charcoal.

Finally, if the amount of picric acid be still further increased under these conditions, it will undergo partial decomposition and volatilise, but will not even deflagrate.