Vol. XIII was issued in parts in the following order 

 N°. 1 — January 1891, Note I— III. 

 N°. 2 — April 1891, Note IV— XIII. 

 N°. 3 — August 1891, Note XIV— XXXIV. 

 N°. 4 — October 1891, Note XXXV— XLI. 



