ZUNTZ-GEPPERT AND BENEDICT METHODS. 



143 



results with the spirometer unit vary more than 3 per cent, while with the 

 Zuntz-Geppert apparatus 50 per cent of the periods show this degree of 

 variation. The same is true of the curves for the oxygen consumption, 

 these two being even more nearly parallel than those for carbon-dioxide 

 production. On the other hand, when the curves for the respiratory 

 quotient are plotted, it is seen that there is a very marked difference, the 



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