TOXEJ), 



THE 

 LONDON, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE 



AND 



JOURNAL. OF SCIENCE. 



[SIXTH SERIES^] 



SEPTEMBER 19fiJ.S. 



XXX. Mathematical Analysis of some Experinve%&ijm, CliS' 

 matological Physiology, $c. By G. H. Knibbs, C^MrGC, 



1. General. 



2. Computation of " Dryness." 



3. Theory of Evaporation from Circular Tank of Limited 



Dimensions. 



4. Application to Human Body. 



5. Increase of Loss due to Wind. 



6. Evaporation Formula for "Water in Tanks. 



7. Nature of Formula for Wind Effect. 



8. Thermodynamic Elements of the Formula. 



9. Difficulties of Analysis. 



10. Principle of deducing a Formula. 



11. Desirable to use Saturation-Deficit as argument. 



12. Deduction of Formula for Total Loss. 



13. Losses of Water and Carbon Dioxide. 



14. General indications for further investigation. 



1. General. 



PROFESSOR W. A. OSBORNE, in the 'Journal of 

 Physiology* (vol. xli., 31st December 1910, pp. 345- 

 354), has furnished for different temperatures and degrees of 

 humidity the results of a number of carefully made observa- 

 tions on the rate of loss from the bodies of two persons, viz, 

 W. A. 0. and A. C, the actual conditions being those to 

 which the human body is ordinarily subjected. A cursory 

 inspection of these results shows marked divergencies under 



* Communicated by the Author. 

 Phil. Mag. S. 6. Vol. 24. No. 141. Sept. 1912. Z 



