FUTURE ANAL YSIS Of MEMOR Y 303 



that of our body (5, 6). All these facts indicate that 

 the main coordinates of the physiological space are 

 determined by structural peculiarities of our body. 

 The ultimate structural elements in this case are not 

 necessarily of a morphological or histological order. 

 They may be, as Mach has intimated in another con- 

 nection, the stereochemical configuration of certain 

 molecules (i). As it is not my intention to enter 

 here upon a discussion of the nature of the space- 

 sensations, but to indicate what place they may oc- 

 cupy in a future mechanics of the activity of the brain, 

 these hints may suffice. 



BIBLIOGRAPHY. 



1. MACH, E. Die Principien der Wdrmelehre, p. 360. Leipzig, 

 1896. 



2. LOEB, J. Zur Thcoric der physiologischen Licht-und Schwer- 

 kraft-Wirkungen. PfliigersArchiv, Bd. Ixvi., 1897. 



3. LOEB, J. Muskelthdtigkeit als Maass psychischer Thdtigkeit. 

 Pfliiger's Archiv, Bd. xxxix., 1886. 



4. WELCH, J. C. On the Measurement of Mental Activity through 

 Muscular Activity, etc. The American Journal of Physiology, 

 vol. i., 1898. 



5. MACH, E. Contributions to the Analysis of the Sensations. 

 Chicago, 1897. 



6. MACH, E. Die Analyse der Empfindungen und das Verhdlt- 

 niss des Physischen zum Psychischen. Jena, 1900. 



7. HERMANN, L. Beitrdge zur Lehre von der Klangwahr- 

 nthmung. Pfliigers Archiv, Bd. Ivi., 1894. 



8. HERING, E. Die Lehre vo m binocularen Sehen. Leipzig, 1868. 



