Document gDE8p8djoRo6KvXJbmGnj100N

TRANSLATION STANDARD FRANCO-AKEEECAINE DE RAFFINAGE * y 'P A R I' S : 2 0 th November, 1933 U r. B. A slan-F inaly, . T etraeth y l Lead. Dear S ir, ' I have p a id a v i s i t to D r. K ohn-A brest and p u t "before him a r e p o r t , w hich was sent-, t o me by U r. M ic h le r, on th e t e t r a e t h y l lea d s itu a tio n in A m erica. ^ ' D r . K o h n -A b re s t c o n fir m e d t o me t h a t a f t e r h i s lo n g e x p e rie n c e w ith c a s e s o f le a d a b s o r p tio n , he had come to th e c o n c lu s io n th a t lead is p rin c ip a lly ex creted by the h a ir o f th e head and sk in of an im a ls, and in E n g lish and A m erican re p o rts a s w e ll as in th o se w hich I showed him , th e re is no m ention o f e x c re tio n of. le a d by th e sk in of anim als. ' E n c lo s e d p l e a s e d f i n d d e t a i l s g iv e n me by D r . K okn- A b re st w hich c le a r ly show t h a t , u n d e r c o n d itio n s o f le a d in to x ic a tio n , th e q u a n titie s , e x p re sse d in m illio n th s , v a ry betw een 200 and 55C0 f o r th e s k in o f a n im a ls , human h a i r and t e e t h , w hereas th e q u a n tity e x c re te d by the organs o f the body is le s s than 90 and in p a r tic u la r , le s s th an 35 By t h e k id n e y s . ' . I t is c e rta in th a t i f D r. K ohn-A brest has g iv en an o p in io n from a te c h n ic a l p o in t o f v iew , he w i l l n o t f a i l to make v e r i f ic a tio n s on th e s u b je c t. I t w ould be in te r e s tin g to know i f th e am ounts o f le a d e x c re te d by th e sk in o f a n im a ls has been te s te d in A m erica and E ngland. . , I th o u g h t i t would be u s e f u l to draw your a tt e n ti o n t o th is p o in t, in case th a t, to obtain au th o ritjr fo r th e.u se of te tra e th y l le a d in F ra n ce , e x p erim en ts have to be made by D r. K ohn-A brest o r by any o th e r com petent p e rso n . . . Yours s in c e re ly ,