NOTE. 
Mr. Spach has published, in the Nouvelles Annales du Museum, Vol, 4. 
what he no doubt considers an answer to some of the criticisms that his perform- 
ances. among Onagracem have called forth. As a specimen of his style of con- 
ducting an argument let the reader take the following. He complains that his 
genus Boisduvalia is stated by me not to have a fringed chalaza, as if he had 
said that it had one, and he denies that he ever did state this, (Boisduvaliarum 
semina fimbriata esse nullibi diximus.) Now it is true that in thé character of 
Boisduvalia this is not mentioned, but on the other hand the main character of 
the subsection Dermosperme, in which that genus is stationed, depends upon 
* semina ad chalazam margine membranaceo aucta." I was not before aware 
that Mr, Spach did not consider it necessary for his genera (!) to agree in cha- 
racter with the sections under-which they aré stationed. 
2 
