rnaer Süfswasserformif ioTi 



Tarn. 





4^ 





/,.', <t ^(/Arillll/nfrVp/irrtiNriT. ^/,Zi^?6. Prnr( / ?i,?:>-2i. /'eilif tn-rroxti l'lli/. 



Denkschriflen il.k.Aknd.d.Wi?5i'n*rlrmalIicm.naturw.('|.XI\'. Bd. 185(. 



.-li J>A V.if.-i. StuUlrail«! 



