“…Sodium and potassium in human skeletal muscle tissue have been reported by many authors (Mudge and Vislocky, 1949;Baldwin et al, 1952;Mokotoff et al, 1952;Talso et al, 1953;Wilson, 1955;Barnes et al, 1957;Litchfield and Gaddie, 1958;Nichols, 1958;Flear and Crampton, 1960;Bergstrom, 1962) and the results showed some difference due to different method of ashing or preparation. Studies upon water and electrolytes metabolism in thyrotoxicosis have been done by several authors (Byrom 1934;Boekelman, 1948;Cachera et al, 1949;Munro et al, 1958;Staffurth, 1962), though none of the report concerning actual determination of intracellular water and electrolytes has been published.…”