The Concept of Force

THE description of force, gathered from the "Hermetica" into my communication in Nature of July 1, p. 24, does not, as such, ask Mr. John Case to believe in "immortal" and "imperceptible" forces, or to adopt any "anthropomorphic and idealist notions". In 1864 Colding connected immaterial and imperishable forces with the perpetuity of energy which had been clear to him since 1840, and there is at least a hint at the modern conservation of energy in the immortal forces of the "Hermetica". Those who still refuse to reduce causal efficacies to mere regular routine can sympathize with the working of the Hermetical forces. The letter, however, only suggests that the Hermetical concept of force embodies a recognizable distinction in sensory experience. The concept can do this however violently modern thought disclaims it in other respects.