The Waterbury Democrat., 1935-10-18

blind person attempts to get py without an interpreter.
 Four out of every hundred males are partially color blind. This con- dition is congenital (present at birth) and hereditary. Only two out of every thousand women are color blind. Total color blindness, which is rare, means that all colors appear is just different shades of gray. In the more common partial color blindness, the individual is unable to distinguish red from green.
 There is form of acquired color blindess whcih may be due to de- generation of the optic nerve or ex- tensions of it in the retina or sensi- tive film in the back of the eye, from excessive use of tobacco or alcohol. This is curable if the tobacco or alcohol is stopped in time.
 Still another type of color blind ness may be recognized by the oculist as contraction of the visual field for blue or green and red, and this is probably due to an indequate amount of vitamin A in the diet.
 One "color" ct is really absence of color) is perceived by all alike black. This reminds Dr. Vernon A. Chapman of the old doctor who was a humdinger on fits" Whenever he encountered a case that was obscure he threw the patient into fits and promptly cured that.
 So Dr. Chapman fits the color blind patient with trick spectacles. The upper parts of the lenses are of "red-free" filter glass. Wearing these trick spectacles, along with whatever ordinary lenses he may require, the patient grasps the wheel and approaches the traffic signal with considerable assurance, for by ducking his head 8 bit and viewing the signal through the up- per part of the lens he can tell whether it is red or green. If 1t re- mains as it looked at first he can proceed safely, for it is green. If it changes to black when he views it through the trick lenses, it Is red and he must sit tight - but sober, let us hope-till it changes again. One color blind patient wear ing such trick spectacles drove few thousand miles alone and never was in doubt about a signal except in one instance where the signal glass was of impure red which transmitted considerable yellow light, and an- other instance where the signal light was out and the patient had to wait for another driver to come along and show him the way. Incidentally, the red-free filter in the top Of the speceacles reduces the direct glare from the sun.
 lamped Dr. Chapman's report of the safety spectacles in Transactions of the Section of Opthalmology of the A. M. A., 1883, but nevertheless I think they are quite practical.
 QUESTIONS and ANSWERS.
 Reading the Finger Nails.
 have been under treatment in this hospital for 1 1-2 years. One of your articles mentioned ridged, brit tie and spOoned nails as a common condition in one form of >anemia. My nails are pitted .. Mrs. F. Al
 Answer - Some physicians who have noticed the nails report that nearly all patients with active tu- berculosis show more or less pitting of the nails. Transverse depressions with lengthwise ridges in the nails may be one manifestation of insuf- flcient vitamins, particularly vita mins, particularly vitamins B, G and D. This latter condition has been observed in persons following a vitamin- diet for the purpose of weight control. When the diet is supplemented with an adequate vitamin ration the condition of the nails steadily improves.
 Baby Feeding.
 Baby 10 months old on bottle since months, constantly constipated- tried maltese, even removing large part of cream, cereal food mOdi- fiers, corn sprup, - can't seem to regulate bowel .. Mrs. ID. F. J.) Afiswer-Feed the baby ripe ba- mana daily, with plain unmodified milk-preferably Certified Milk, sec-