I riiiisaclidiis Sccirly WituI .hrliilrcls ami Miiriiir liiuiinccrs. I'al. 30, 



I()2I. 



Plate 7 



I'd ilhtslralc JHiJH'r on " h'cdiicilon (icars for Slii/-> I'rol^ulsion." 

 by h'ohcrl U'arriiicr, Jisq., Member. 



