iv 



nary Communication." By Miss S. C. M. Sowton and J. S. 

 Macdonald. Communicated by Professor Sherrington, 

 F.K.S. 



II. " On the Negative Variation in the Nerves of Warm-blooded 

 Animals." By Dr. X. H. Alcock. Communicated by 

 Dr. Waller, F.R.S. 



III. " On the Optical Activity of Haemoglobin and Globin." By 



Professor Gamgee, F.R.S., and A. Croft Hill. 



IV. " On the Nucleo-proteids of the Pancreas, Thymus, and Supra- 



renal Gland, with especial Reference to their Optical 

 Activity." By Professor Gamgee, F.R.S., and Professor 

 W. Jones. 



V. " Studies in the Morphology of Spore-producing Members. 

 No. V. — General Comparisons and Conclusion." By Pro- 

 fessor F. 0. Bower, F.R.S. 



VI. " Primitive Knot and Early Gastrulation Cavity co-existing with 

 Independent Primitive Streak in Ornithorhyiwhm." By Pro- 

 fessor J. T. Wilson and J. P. Hill. Communicated by 

 Professor Howes, F.R.S. 



VII. " The Brain of the Arcbseoceti." By Professor Elliot Smith. 

 Communicated by Professor Howes, F.R.S. 



February 19, 1903. 



Sir WILLIAM HUGGINS, K.C.B., O.M., President, in the Chair. 



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

 them. 



The following Papers were read : — 



I. " On the Formation of Definite Figures by the Deposition of 

 Dust."' By Dr. W. J. Russell, F.R.S. 



II. " Mathematical Contributions to the Theory of Evolution. — On 

 Homotyposis in Homologous but Differentiated Organs." 

 By Professor Karl Pearson, F.R.S. 



III. " The Evaporation of Water in a Current of Air." By Dr. E. P. 



Perman. Communicated by Professor E. H. Griffiths, 

 F.R.S. 



IV. " On the Determination of Specific Heats, especially at Low Tem- 



peratures." By H. E. Schmitz. Communicated by Pro- 

 fessor Schuster, F.R.S. 



