Introduction
All that can be wisely attempted in an article which aims merely to furnish a preliminary survey of the psychological aspects of the smoke problem, is to outline the scope of the inquiry, to review briefly the direct and indirect data, whether impressionistic, observational, statistical or experimental, which bear on the problem and which are already available in recorded observations or in literary and scientific memoirs, and, finally, to suggest certain problems amenable to statistical or experimental study.
The smoke palls of our industrial centers exert both a direct and indirect influence upon the human organism. The direct influence is due to the immediate contact of the smoke-contaminated and poison-laden air with the skin, mucous membranes and sense organs of the body. The indirect effects are traceable to the various meteorological states which are due to smoke products in the atmosphere, and which in turn directly influence the body. Frequently, possibly always, the smoke conditions and the state of the atmosphere are so inextricably mixed that the biological effects must be ascribed to the joint action of both factors. Only in a controlled experiment would it be possible absolutely to segregate, and thus separately to measure, the effects of the smoke and meteorological factors of weather states. This has not yet been attempted.
The mental effects due to atmospheric smoke and its related weather states are likewise both direct and indirect. The indirect effects are due to the influences exerted by smoke clouds and smoke-produced weather states on the physiological organism—on health, well-being, energy, freshness, potential reserve, sensori-motor efficiency—and to the influences thus directly exerted by the changed bodily states on the mind: on mental tension, balance, inhibition, impulse, inclination, feeling, emotion, thought, and conduct. On the other hand, the direct mental effects are traceable to the immediate influences, whether conscious or unconscious, exerted on the individual’s mental actionby his own experiences—by the thoughts, feelings and impulses which have been excited in him by various bodily states, sensations and perceptions produced by cloud and weather conditions—or which have been directly produced by processes of association and habit formation, the latter of which have themselves been initiated by thoughts or responses occasioned, in the first instance, by the physiological effects of external influences. The action of the mind itself does have a determining influence upon its own subsequent attitudes, beliefs, propensities and habits. It is important that these direct effects of the mind’s own action upon its subsequent behavior be recognized, for much of the mental gloom and depression occasioned by dismal cosmic influences has merely been initiated by the external stimuli. Their peculiar intensity is largely due to the subject’s own introspections, to his own stream of thought. The mental influences are often more pronounced than the bodily influences, whether the mental influences arise from somatic alterations or from introspective changes. Cosmic states are, perhaps, less to be regarded ascausesof mental action thanfactorswhich may upset the emotional balance, lessen inhibition and alter the train of thought and conduct.
It is also important to emphasize the fact that no hard and fast line of demarcation can be drawn between the bodily and mental effects of smoke-clouds or smoke-produced weather states. The human organism is a psycho-biological unity, and we cannot, except in a purely artificial and arbitrary fashion, divide thesomaand thepsycheinto two independent compartments. Bodily states normally influence mental states and mental states, in turn, normally influence bodily processes, particularly the functions of the glandular, circulatory, sexual and neural systems.