So far as reality is concerned all our sense-perceptions are in the same boat, and must be treated on the same principle.

The evenness of treatment is exactly what this compromise theory fails to achieve.
The bifurcation theory however dies hard.

The reason is that there really is a difficulty to be faced in relating within the same system of entities the redness of the fire with the agitation of the molecules.

In another lecture I will give my own explanation of the origin of the difficulty and of its solution.
Another favourite solution, the most attenuated form which the bifurcation theory assumes, is to maintain that the molecules and ether of science are purely conceptual.

Thus there is but one nature, namely apparent nature, and atoms and ether are merely names for logical terms in conceptual formulae of calculation.
But what is a formula of calculation?
It is presumably a statement that something or other is true for natural occurrences.