“Chemists and physicists deny that perpetual lamps are possible, alleging that whatever is resolved into vapor or smoke cannot be permanent, but must consume; and as the oily nutriment of a lighted lamp is exhaled into a vapor, hence the fire cannot be perpetual for a want of food.
Alchemist, on the other hand, deny that all the nourishment of kindled fire must of necessity be converted into vapor. They say that there are things in nature which will not only resist the force of fire and remain inconsumable, but will also prove inextinguishable by either wind or water.
In an old chemical work of the year 1700, called Νεκροκεδεια, the author gives a number of refutations of the claims of various alchemists.
But though he denies that a fire can be made to burn perpetually, he is half-inclined to believe it possible that a lamp should burn several hundred years. Besides, we have a mass of testimony from alchemists who devoted years to these experiments and came to the conclusion that it was possible.”
H. P. Blavatsky