NOTE. 
of Vol. u. of the Contributions were issued as follows: 
152, June 27, 1891. 
346, July 1, 1892. 
Pteridophyta, pp. 347 to 588, May 
The three numbers 
No. 1, Polypetalw, pp. 1 to 
No. 2, Gamopetalx, pp. 153 to 
No. 3, Apetal, Monocotyledone, 
Il 
10, 1894. 
