Mém. d€ fAcad. Coll. 80. t. XLIIl 



Planche X 



30^ 



26* 



^JimU, 



27 



J FBAIPONT il F. TIHON, AD. NAT. OEL. 



LITH. AUG. BENAflD, LiÉQE. 



