In ancient times meteors were supposed to be generated in the air by inflammable gases.
Its vapour is spontaneously inflammable when exposed to air.
They are all readily inflammable and are practically insoluble in water.
It is not inflammable.
This is at first colourless carbon dioxide, but later on inflammable gases come out of the mass, which at this stage has turned into a thicker, pasty condition, showing that the end of the reaction is near.