We are now, as to this point, in the same state of mind in which we have always been, only this state of mind has been revealed to us more clearly.

We are in theoretical ignorance, but we are in no practical perplexity.
The perplexity comes in with the second question; and it is here that the issue lies between the affirmation and the denial of a second and a supernatural order.

We will see, first, how this question is put and treated by Dr.Tyndall, and we will then see what his treatment comes to.

Is it true, he asks, as many physicists hold it is, '_that the physical processes are complete in themselves, and would go on just as they do if consciousness were not at all implicated_,' as an engine might go on working though it made no noise, or as a barrel-organ might go on playing even though there were no ear to listen to it?
Or do '_states of consciousness enter as links into the chain of antecedence and sequence which gives rise to bodily actions ?_' Such is the question in Dr.Tyndall's own phrases; and here, in his own phrases also, comes his answer.

'_I have no power_,' he says, '_of imagining such states interposed between the molecules of the brain, and influencing the transference of motion among the molecules.