14 



Report S.A.A. Advancement of Science. 



Some typical specimens of the diurnal variation of the barometer 

 shewing these phases are given in Figs. i. and 2. We see from these 











Cia;.e 0- ^•JtlJ^HB. \'*<U*T-ow; 100 D%■lSf^.^3 cl | (*C.i 



that the mean annual range of the diurnal variation of the barometer 

 decreases from the equator to the poles with some differences in the 



