Document 2JMz4REOVB6RM3vb5JRBG96jp

\ 14th June...................^ " 5 '' Dr* Robert A. Kehoe, University of Cincinatti, CIHCINATTI 19, OHIOU,. S. A. Dear Doctor Kehoe, I would not wish you to measure my appreciation of your tihnestrdueclatiyveinleactktenorwalneddgliinbgetrhaelm.donation of literature on lead poisoning by Your strictures on ny note on lead in normal urine are well deserved* The note 'was written in haste primarily for the purpose of stressing btheelownec0e5ssimtyillfiogrrakmee.ping the lead level in urine as lowas possible, preferably harmto the orgaTnihseml,ewvehlichthmatayyonuotrbegeamrdanaisfeisntneodcuinoutshemakyi,dnifeyms.aintained, do You are well aware that one part of fluorine per million in water will affect the teeth of about ten percent of the children below the age of ten years who consume it regularly. Rluorine like lead is a cumulative poison and although there is evidence only in the teeth of the effect of minute amounts it may be injurious to other portions of the body. man, said CarlylTe,heiws otrhled misosmt omreeroirtolreiosussapnroimdumcetnsoefhnoastpuirtea,l wbuatrdw. herAe hdoeawletty find such a man. The statement that a level of *15 mgra. of lead is conpatible /with health appears to be based on negative evidence or on observations over !too short a period. Vie had gained the impression from our results that age was secreting more lead than youth, which has nowbeen dispelled by one of the papers forwardnd by you. -I The Queensland Department of Health is very active in reducing r/ I the lead hazard in foodstuffs, paint, toys, crayons and tobacco. In Queens- f land, no person shall use or put any lead containing more than five per cent of : i soluble lead (lead soluble in 0.25 per cent H3l) upon any part of a house, rail/^f blind, gate or fence to which children under the age of fourteen years have easy access. As metallic lead is also a poison, use of it in toys is also y prohibited. Lead in children's crayons is limited to 0.5 per cent. [ /; I would say thatny note on lead illustrates that there is muck* published that need not have been if adequate use had been made of the litera ture. Your valuable contribution to our library has rectified that position. This laboratory, like your own, is concerned with much war work. I thank you again, Doctor Kehoe, for your courtesy and assistance. KJT 0012325 Yours sinoarely,