( 868 ) 



the combined developer of Sandow ; care was taken that all the 

 muscles of the bodj and the extremities were used. 



When the first three days of the scant}^ diet, July the 7 ^^ , 8*'^ and 

 9^^^, in which the secretion of nitrogen fell with v. H. from 14,562 

 to 9,045 gr. and with Y. from 13,721 to 10,234 gr. are not counted, 

 as belonging to a transition-period, and neither the last two days, 

 July the 28^^' and 29''^ at which about 30 gr. more proteids daily 

 were taken, it appears that the excretion of creatinin has amounted 

 in 15 days of rest on an average every day to : 



V. H. -J .836 gr. (max. 1.935, min. 1.693 gr.) 

 V. 1.962 „ ( ., 2.079, „ 1.876 „ ) 



while on the working days was found : 



v. H. July the 15^'» 1.908, July the 20^'^ 1.921 

 and July the 23'^' 1.974 gr. creatinin. 



V. July the 15* 2.142, July the 20^'^ 1.947, 

 and July the 23'"'^ 1.937 gr. creatinin. 



Here then the figure with v. H. is always, with V. once above 

 the average on the working day. Meanwhile the deviations do not 

 surpass the oscillations, which are always found, also without im- 

 portant exertions of the muscles. 



The figure found with V. on July the 15^^' does, it is true, surpass 

 the maximum in the period of the days of rest, but the difference 

 0,063 gr. is so slight, that no value must be attached to that, in 

 connection to the lower figures of the two other workingdays. 



On the two last days of the series on which no muscular labour 

 was performed, but on which more proteid was taken, the excretion 

 of creatinin was : 



V. H. July the 28'^ 1.955 gr., and July the 29* 1.959 gr. 

 V. „' „ „ 2.053 „ „ „* „ „ 1.984 „ 



while with both the secretion of nitrogen increased from about 

 8 gr. to 11 gr. daily. 



IV. In September 1905 a new experiment was taken, to examine 

 firstly whether preceding muscular exercise might perhaps bring 

 some change in the result, secondly to investigate the influence of 

 excessive labour and thirdly to see whether the excretion of creatinin 

 would be increased with excessive labour and totally insufficient food. 



After performing daily for three weeks at a stretch indoor gymnas- 

 tics after the method of Sandow, the experiment was begun Septem- 

 ber the 26* with food of the same composition as was used July the 

 18* till the 27*^', hardly sufficient and poor in proteid. .This food was 



