The force of caloric is imponderable and invisible, and is only known by its effects.  We do know that it is occluded in metals and other material, because we can unlock it and set it free, or we can transfer it from one body to another, and by measuring its effects, we can determine its quantity.  We know that it prefers to travel over one vehicle more than another, and by this knowledge we are able to insulate it, and thus conduct it in any direction desired.  The materials through which it passes with the greatest freedom are called conductors, and the materials which most retard its passage, non-conductors; but these terms must be taken in a comparative sense only, as in fact there are no absolute non-conductors of dynamic caloric, or of what we call electricity.

The dynamo-electric generator simply draws the dynamic caloric from the air or earth, or both, and confines it in an insulated path.  Now if that path be a No. 10 wire, the conduit may be sufficient to permit the caloric to pass without increasing the molecular velocity of the metal to an appreciable degree, but if we cut the No. 10 wire and insert a piece of No. 40 platinum wire in the path, the amount of caloric flowing through the No. 10 wire cannot pass through the No. 40 wire, and the resistance so caused increases the molecular velocity of the No. 40 wire to such degree as to exhibit the phenomenon of incandescence, and this is the incandescent electric light.  And if we consider the carbon light, we find that the current of caloric, in passing from one pencil to the other, produces a molecular velocity of luminosity in the adjoining atmosphere, and in addition a portion of the carbon is consumed, which sets free an additional amount of caloric, at a very high velocity, hence the intensity of the carbon electric light is largely due to the dynamic caloric unlocked from the pencils, and thus we find that the electric light produced by either method is due to the action of dynamic caloric.

Taking this theory based upon physical science, and the facts which we know pertaining to electricity, I conceive that caloric exists in two conditions. Static caloric is what we call latent heat, and dynamic caloric is what we call electricity.  Therefore what may we expect of it (electricity) is merely a matter of economy in the development and utilization of dynamic caloric; in other words, can we unlock static caloric by non-luminous combustion, and thus develop dynamic caloric as a first power more economically per foot pound than we now do or can hereafter do by luminous combustion?  Second, can we utilize water and wind for the production of dynamic caloric as a first power?  Third, can we utilize the differential tension of dynamic caloric in the earth and the atmosphere as a first power?  Fourth, will it pay to use luminous combustion as a first power to generate dynamic caloric as a second power?