356 Tot 5 hae tin 
discovery. He he, to howe ced Ee 
the mame of M. is nowhere mentioned 
‘Wistees Malema ee nade? However this may be, ee 
honourable Academician reproaches us, and myself, 
woth ketene aed aect doch ood dooms ta <——— 
think I deserve this reproach, as the segmental ongans of 
the Annelida, bemg very suuple modifications of a very eon- 
tal organs, or at least im whieh these ongams are re- 
to simple apertures in the wall of the body. | 
Nervous System. 
is undoubtedly to M. de Quatrefages and M. Leydig 
of. tho. hanclidas tho forms’ bon cocepicd hime 
with the exterior form of this : system, and the latter with its 
histology. The “Titel Metenchc ce hundéa? saa all 
historical details upon this subject ; bet if we gp tee 
sooth waueniy oF aie we shall find 2 concise and well- 
