COFFRET 
ms? 
    i 
 57 gzrlbf  x1   ä   11:; ii 
 ä v          
" ' fi;  . 52.  f? 
  1 9-  N 
f. Ä gä;    f  f ;;f p; 
        
r ;             
 fffma"       w 
 a - ggj  i;  v   '   441g 
aiglettes. La figure 2 donne le d6ta11 de la plaque formant couvercle,