Document 8Ek9wzpGYD1dpqyarNQQ2mzy

fcxamm. f to Govern m en t, Ben gal m e Uc a l c o l l e g e Calcutta,- ll __ 19T> J iw ^ ft-. C-IAV. . A - D W* Jan u ary 6, 19 38 V^-- i ] a c c e p t my th an ks f o r U ^ vi^ ---f a le a d In th e u r in e and t i s s u e s and e x c r e ta * to me and I ho pe you e s w hich come o u t on / -"'V'lC. fr v V ^ '' - es * - u rs t o me t h a t yo u he work w hich we h ave d p articu larly usefu l on th e s tu dy o f la rg e on s in g le ' in d iv id u a ls ta ke n a t random*. seems no doubt th a t i s p e o p le s tu d ie d b y you 3 th e Am erican p o p u la ti o n , i l l fr a n k n e s s t h a t I am ---er is d e gre e o f v a r i a b i l i t y o f r e s u lts o btain e d on th e u rin e sam ples. In our e xpe rie n ce the la r g e s t s in g le fa c to r which produces gro ss va ria tio n in the u rin ary le ad e xcre tio n o f a s in gle in d ivid u a l Is th e w ater o u tp u t from day to day* ( I r e fe r h e r e , o f c o u r s e , to s ta n d a rd c o n d i ti o n s o f l e a d e x p o s u re . Thus i f th e l e a d i n ta k e i s s u b s t a n t i a l l y th e same from d ay to d ay, le a d o u tpu t in the u rin e w i l l va ry c h i e f l y with, the w ate r o u tp u t.) In o th e r words the amount o f w ate r con sumed i s a f a c t o r and the amount l o s t in p e r s p ir a tio n i s a l s o an Im p o rta n t f a c t o r . The d i f f e r e n c e s due to t h i s f a c t o r w i l l he s e e n c l e a r l y in s tu d i e s made on s u b je c t s under la b o ra to ry c o n d itio n s , as d e s cribe d in one o f the a r t i c l e s w h ich I am s e n d in g yo u . Th is b r i n g s me to s a y t h a t be ca u s e o f yo u r i n t e r e s t in t h i s s u b je c t , I am s e n d in g yo u , un de r s e p a r a te c o v e r , a number o f r e p r i n t s w hich d e s c r ib e th e r e s u l t s o f some o f our s tu d i e s in t h i s l a b o r a to r y . U n fo r tu n a te ly some o f them were p u b lis h e d In jo u rn a ls tfE 0.019868