( 367 ) 



The difference is so small that no value must be attached to it. On 

 the days which followed oii the muscular. exertion the tigurcs of the 

 creatinin remained within the usual daily oscillations. 



The secretion of nitrogen was rather irregular with both during 

 the whole experiment. 



From June the 22'«i till Julj the 2"<^ 1904 (eleven 'days) the 

 experiment was repeated with less food which in particular was less 

 rich in proteid. It contained : 



for V. H. 71.5 gr. proteid, 125 gr. fat, 351 gr. carbohydr.; 33.7 Cal. p. Kg. 

 „ V. 80.5 „ „ 74.75 „ „ 358 „ „ 34.6 „ „ „ 



On July the 1^* a bicycle excursion of three hours was undertaken 

 (50 KM.). 



The excretion of creatinin amounted on an average to: 



10 days of rest Workingday 



V. H. 1.983 (max. 2.042, min. 1.809 gr.) 1.997 gr. 



V. 2.039 ( „ 2.174, „ 1.920 „) 2.049 „ 



On the days which followed the day of muscular labour the excretion 

 of creatinin did not increase either. 



III. Whereas till now meat was still taken, in the series of 

 experiment II daily 50 gr., the experiment was now taken with 

 food which contained no creatinin at all, moreover it was made 

 poorer in proteid. The experiment lasted from July the 7'^^ till the 

 29^1^ 1904, 23 days at a stretch. 



From July the 7"^^^ till 18'^^ only bread, butter, cheese, rice and 

 sugar were taken containing : 



for V. H. 50 gr. proteid, 115 gr. fat, 344 gr. carbohydr.; 31.2 Gal. p. Kg. 

 „ V. 50 „ „ 74 „ „ 344 „ „ 33.8 „ „ „ 



From July the 18*^^^ rice was partly replaced by potatoes and 

 the quantity of butter was decreased so that the ration became: 



for V. H. 47 gr. proteid, 98 gr. fat, 337 gr. carbohydr.; 29,5 Gal. p. Kg. 

 „ V. 47 „ „ 64 „ „337 „ „ 30.1 „ „ „ 



On Jul}^ the 28"^^ and the 29*'' 5 eggs were daily added to this food. 



On July the 15''', the 20*'' and the 23''^^ muscular labour was 

 again performed while the other days were passed in the laboratory 

 with occupations which exacted only little exertion of the muscles. 

 On Jidy the 15*'' a bicycle excursion was undertaken in which 

 54 K.M. were covered in three hours. On July the 20"' and 23''* 

 fatiguing indoors gymnastics were performed for 2^/^ hours at a 

 stretch with halters of 10 K.G. and with the chest-expander and 



