Dates of the several Numbers of this Volume. 



Xumbei XXVI, pp. 1-63 for May 1911. 

 Number XXVII, pp. 04-126 for May 1911. 

 Number XXVIII, pp. 127-190 for May 1915. 

 Numbers XXIX-XXX, pp. 191-277 for January 1917. 



