2 Journal of the Mitchell Society [December 



247th Meeting— March 8, 1921 



W. C. George. — Comparative Anatomy of the Brain. 



The principal morphological sulxlivisions and connections of the 

 human brain were described and their probable phylogeny outlined. 

 The relation of the environmental conditions and habits of life of 

 animals to the degree of development of special parts of the brain 

 was indicated. Dissections of brains of an elasmobranch fish, a frog, 

 reptile, bird, rat, mole, cat and man were exhibited to show homolo- 

 gous parts of the brain and the degree of development under different 

 conditions of life. 



Otto Stuhlman, Jr. — So77ie Unsolved Problems of Modern Physics. 



No science has gone through a more stormy period of develop- 

 ment than physics during the last decade. Our most cherished 

 theories have undergone most violent upheavals, the result of which 

 no one at this time can predict with certainty. These discoveries 

 have forced us to adopt new and contradictory explanations, w^hich 

 in general may be divided into three groups: (a) X-rays and the 

 emissions from radio-active substances ; (5) The theory of radiation ; 

 (c) The so-called theory of relativity. 



Of these the "Theory of Radiation" was discussed and some of 

 the outstanding problems that require solution were explained in 

 detail. 



Amongst those mentioned was Wien's Displacement Law and the 

 contributions made by Planck. The classical theory of specific heat 

 and entropy and its quantum modifications were discussed. The 

 quantum theory as applied to the emission of electrons from bodies 

 was mentioned and some of the outstanding problems were discussed 

 in detail. The unsolved problems in the photo-electic field were next 

 enumerated and their possible bearing on the structure of matter 

 was sketched. Series spectra and the numerous problems confron- 

 ting the physicist in this field were finallj^ enumerated. The paper 

 closed with a review of the Lewis-Langmuier theory of the structure 

 and physical properties of nitrogen and carbon monoxide. 



248th Meeting— April 12, 1921 



Thorndike Saville — The Water Power Situation in North Carolina. 

 This paper presents the results of a statistical study of the devel- 



