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Related post: stantly upon bright objects or reflecting surfaces. For instance, many persons suffer from headache when they look upon an expanse of river or lake water while the sim is shining. The retina of the human eye is normally adapterl to high-lighls (the sky) which come Fig. 7. Well Lighted Factory Room. A factor in safety, health and production. above the center of the field of vision, and to dark tones and colors in the lower field of vision. Looking down upon white reflecting surfaces, as upon paper, in ironing white goods, etc., is the cause of considerable industrial headache, much of which can be prevented by the wearing of eye shades or the use of dark glasses. DAMPNESS. вАФ Again, it is obvious to most persons that work- ing continually in Buy Vrikshamla a damp place, particularly if within doors, is in^ tmtcal to health. By dampness we mean not only moist, Order Vrikshamla Online but wet places, steamy atmospheres, or air in which the'humidity is main- tained at a higher point than 65¬∞. If, to such conditions, changes in L.L, ...J Li Google 320 THE OHIO PUBLIC HEALTH JOURNAL. temperature, either up or down from 68" take place, the risk to health becomes greater. Those whose work necessitates exposure to water and dampness should not be required to do sedentary work unless temperature is carefully "controlled, and recreation periods are arranged for. They should be provided with rubber boots, rub- ber aprons, etc., in addition to all mechanical means devisable to re- move water and steam. Where other health-hazards are associated with this feature of dampness and moisture, workers should have Fig. 8, Dark Wall Shades Afkect Illumination, Each of these two little rooms receives the same light. Dark walls absorbed most of the light in left-hand room. bathing facilities, such as the shower bath, and obviously, such necess- ities as lockers for street clothing. Some establishments widely pro- vide drying rooms in which to hang damp working clothes. By far the vast majority of workshops and factories, however, are afRicted with the opposite condition. DRYNESS. An experiment made in almost any factory or workshop room, office or store, dur- ing the months of artificial healing will show that the relative humid- ity, instead of ranging betwen 60¬∞ and yo¬∞ for a temperature of f>8'', is very much below this. This applies to nearly all steam-heated. hot-water heated, or hot-air heated quarters. This dryness of the L.^;,z:change of air and Fig. 9. Cuiy Preparation in Pottery Works. Showing filler press room of model construction in an art tile plant. LL,-.,.>.jbi Google THE OHIO PUBLIC HEALTH JOURNAL. 10. The Wet-and-Dhy-Bulb Thermometer. es relalive liiimidity and "seiisibie" temperature. The most important health indicator made. A fan should be turned upon it to put the air in motion while taking a reading. moisture almost imlianipered, while light is, if anything, brtter diffused. DEVITALIZING AIR.вАФ bad air conditions in work places may be due to (i) deoxidation (presence of flames, furnaces), (2) contamination (escaping gases, vapors, fumes). (3) pollution (dust. smoke, moisture particles from other persons" l)reaths), Purchase Vrikshamla Online (4) unnat- ural temperature-humidity relations, and (5) stagnation. Of these, stagnation probably does the most Purchase Vrikshamla damage to the largest number of persons, since quiet, still, "dead" air fails to promote evaporations from the surface of the skin, and to stinndate the sensory nerve end- ings located in the skin, both of which arc necessary to maintain a good circulation of the blood. Tliis ^ood circulation is especially needed for a large class of workers wliile engaged in their variou.= trade processes. The essential difference between indoor and outdoor THE OHIO PUBLIC HEALTH JOURNAL, 323 air is that the former is usually still, quiet, or вЦ†"cteai.!", while the latter is in motion, is fresh, and "alive". If to stagnation are added any of the other four conditions above mentioned, as is often the case in work places, the danger to health is much increased. Probably, abnormal temperature-humidity relations are next in hazard to stagnation as deleterious factors, although the physiology of the human organism can adapt itself to quite wide variations in these if the air can be kept in motion. A person can exist (at least experimentally) in comparative comfort in a closed-up closet for a considerable time if these last mentioned features вАФ temperature 68¬∞. Iiumidity (relative) 60¬∞. and a motion of the air, as by fans вАФ No fresh air possible within work places in this district. are provided for. It has been practically established that it is not the amount of oxygen which persons use up in breathing, nor the amount of carbon-dioxide they exhale, nor the emanations from the human body (except moisture particles from the coughing, spitting or sneezing of diseased persons in crowded quarters) which count for aught in vitiating the air, except under the most -unusual conditions of crowding or confinement. There is a difference between the air of many work quarters, however, than that of homes, schools, offices, stores, etc. In shops, factories, mills, and many other establishments there are the ever- present air vitiators such as free flames without vents, gas heaters, Order Vrikshamla salamanders, furnaces, gase? from tanks and vats, and chemical vapors which are not confined or led away from the breathing at- mosphere. To these are multitudes of wage-earners exposed as well 324 THE OHIO PUBLIC HEALTH JOURNAL. as to air stagnation and temperature-humidity factors. Practically all such vitiation can be corrected by various types of confining cup- boards and enclosures, and by artificial ventilating systems, air-agita- tors, suction fans, etc, Of all factors which tend to promote high death rates, par- ticularly from the preventable causes, such as tuberculosis, pneumonia. Fig. 12. To Conveft an Ormnarv Sash Window into a Ventilator. Insert a board under bottom sash. It will be found that fresh air from outside will find its way into the room as indicated, wilh Buy Vrikshamla Online very little, if any, draft. This is a useful method for many workshop-i. bronchitis, and the like, atmosphere which is not that supplied by na- ture, is paramount. We might say, in a word, that if the out-door air could be breathed by workers in all lines of activity throughout
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