Upon the Development of the JSnamel in certain Osseous Fish. 61 



January 18, 1900. 



The LORD LISTER, F.R.C.S., D.C.L., President, in the Chair. 



The Right Hon. Lord Justice Romer was admitted into the Society. 



A List of the Presents received was laid on the table, and thanks 

 ordered for them. 



The following Papers were read : — 



L " Upon the Development of the Enamel in certain Osseous Fish." 

 By C. S. Tomes, F.R.S. 



IT. " Further Observations on ' Mtragin ' and on the Nature and 

 Functions of the Nodules of Leguminous Plants." By Miss 

 M. Dawson. Communicated by Professor Marshall Ward, 

 F.R.S. 



III. " Oh the Innervation of Antagonistic Muscles. Sixth Note." By 

 Professor Sherrington, F.R.S. 



lA^. " On the Viscosity of Argon as afl'ected by Temperature." By 

 Lord Rayleigh, F.R.S. 



V. " On the Behaviour of the Becquerel and Rontgen Rays in a Mag- 

 netic Field." By the Hon. R. J. Strutt. Communicated by 

 Lord Rayleigh, F.R.S. 



VI. " On an Experimental Investigation of the Thermo-dynamicai 

 Properties of Superheated Steam." By J. H. Grindley. 

 Communicated by Professor Osborne Reynolds, F.R.S. 



" Upon the Development of the Enamel in certain Osseous Fish." 

 By Charles S. Tomes, M.A., F,R.S. Received December 4, 

 1899— Read January 18, 1900. 



(Abstract.) 



The author has shown in previous communications to the Royal 

 Society (which are to be found in its ' Transactions ') that notwith- 

 standing the fact that in all the vertebrata enamels present tolerably 

 close resemblances in chemical, physical, and histological characters, 

 differences far more considerable than might have been expected exist 



G 2 



