ABSTRACT
During the last few years considerable evidence has been obtained of the production, under various conditions, of bodies which behave as if their mass was only a small fraction of the mass of the chemical atom of hydrogen. Michael Faraday showed that when a current passed through a conducting solution, the amount of matter deposited or given off at the electrodes depended only on the quantity of electricity which had passed through the solution. For different solutions, the amounts of matter deposited for unit quantity of electricity are chemically equivalent to each other. The view that the atom is a complex aggregate instead of a simple entity, does not in any way invalidate the basis of chemical theory. The extraordinary complicated spectrum of elements of heavy atomic weights is of itself very strong support of the view that an atom is a very complicated structure.
