Presidential address. 755 



inicroehemistry is necessary. This should supply the stimulus to enthusiasm in 

 the search for reactions that will enable us to locate with great precision in the 

 living cell the constituents, inorganic and organic, which affect its physical state 

 and thereby influence its activity. 



Literature. 



Barcroft and Brodie, ' Journ. of Phyeiol.,' vol. 32, p. 18; vol. 33, p. 52. 



Bernstein, 'Arch, fur die ges. Physiol.,' vol. 85, p. 271. 



Berthold, ' Studies iiber Protoplasmamechanik,' Leipzig, 1886. 



Biitschli, ' Untersuchungen iiber Mikroskopische Schaume,' Leipzig, 1892. 



Engelmann, 'Arch, fur die ges. Physiol.,' vol. 2, 1869. 



Wiilard Gibbs, 'Trans. Conn. Acad, of Sciences,' 1878; also ' Thermodyna 

 mische Studien,' Leipzig, 1892, p. 321. 



Imbert, 'Arch, de Physiol.' 5ieme ser., vol. 9, p. 289. 



A. B. Macallum, ' Journ. of Physiol.,' vol. 32, p. 95, 1905. 



M. L. Menten, 'Trans. Canadian Inst.,' vol. 8, 1908; also 'University of 

 Toronto Studies,' Physiological Series No. 7. 



J. S. Macdonald, ' Proc. Roy. Soc.,' B. vol. 76, p. 322, 1905. Also : 'Quart. 

 Journ. of Exp. Physiol..' vol. 2, No. 1, 1909. 



Quincke, 'Ann. der Physik und Chemie,' N.F. vol. 35, p. 580, 1888. 



T. Brailsford Robertson, ' Bull. Physiol. Laboratory, University of Cali- 

 fornia,' 1909. 



J. Stoklasa, ' Zeit. fur physiol. Chem.,' vol. 62, p. 47. 



J. J. Thomson, 'Application of Dynamics to Physics and Chemistry,' 1888 



J. Traube, 'Arch, fur die ges. Physiol.,' vols. 100 and 123. 



The following Reports were then read : — • 



1. Report on Anaesthetics. — See Reports, p. 268, 



2. Report on the Ductless Glands.;— See Reports, p. 267. 



3. Report on the Occupation of a Table at the Zoological Station, Naples. 



Bee Reports, p. 165. 



4. Report on Electromotive Phenomena in Plants.-— See Reports, p. 281. 



5. Report on the Dissociation of Otfy- Haemoglobin at High Altitudes. 



See Reports, p. 280. 



G. Report on the Effect of Climate upon Health and Disease. 

 See Reports, p. 290. 



MID AY, SEPTEMDE1} 2. 



The following Papers and Reports were read : — • 



1. Discussion on Compressed Air Illness^ 

 Opening Remarks by Leonard Hill, M.B., F.R.S. 



Air dissolves in the body, according to Henry's law. The cause of the illness 

 is the escape of nitrogen bubbles in the blood. Oxygen chemically combines with 



