This light is produced by the combustion of the carbon of which the electrodes are composed.

The combustion with CrO3 is then proceeded with in the ordinary way.

The chemical action of the sun's rays is detrimental to combustion.

The sun is not burning, and combustion is not the source of its heat.

The combustion of the hydrogen is, of course, due to its union with oxygen.

The product of the combustion is therefore a compound of hydrogen and oxygen.

While hydrogen is readily combustible, it is not a supporter of combustion.

Carbon dioxide is incombustible, since it is, like water, a product of combustion.

In what ways does the digestion of food resemble the combustion of fuel?

I am, of course, not alluding in this to heat which can be generated by combustion.