Vol. XV was issued in parts in the following order: 
a 
44 
0 
N° 
1 
2 
3 
4 
October 
— April 
July 
October 
1892, Note I—VI. 
1893, Note VII—XXII. 
1893, Note XXIII XXXVII. 
1893, Note XXXIX—XLY. 
