Vol. XI was issued in parts in the following order: 



N°. 1 — January 1889, Note I— XX. 

 N°. 2 — April 1889, Note XXI— XXIX. 

 N°. 3 — July 1889, Note XXX— XXXIX. 

 N°. 4 — November 1889, Note XL— LIV. 



