MICHIGAN ACADEMY OF SCIhTNCE. 



185 



c 



o. 



-»" 



-rH 5 







PL, -5 



2 



o 



< 

 U 



o 



E 



as 



.laiiaqs 



s;uB[d 



IPS 



•laiiaqS 



o I 2. 



SlUBId 



IioS 



^ ; 



mnuiixBpv 

 .ig^aiiiouuaiH 



UOHBipB.! 



.laiiaiis 



S^UBIJ 



IPS 



jaiiaqS 



SJUBIJ 



sja^auuiiuu ui 

 s;uB(CI iinoj j6 



a^BQ 



ooooooooooooooooo oooooooooooooo 



1— ( eo c^ 'O © o 'f^ x I-H cc ^ o 00 cc ■^ «•! 00 c-i (M o CO (M 00 o "M o-"i M eo »n OO GO 

 1ft o o »o *a '-o ^ »^ © ^ »ft "^ o »o :c »fi -^ »c o '^ 1!^ '-s '-0 t- *- r-» 1- t- 'i ® «o 



-oxooooooo 



CiOOWC-IMOOOOOSOOtn-HOrHinMOOOt 



ift L-^ in «c «- :d 1-- :2 o I- -o io 'O >o *^ o -t" >ft »n :o »ft *^ t- t-- CO I- CO t^ (D 



^OOOt-NrH •iNOOOOOOOM.-lOOOOOCCC-IOClOOOOO'* 



^ (M tfi W .H O 



»ri -*-#■<* ITS m 







r- CC t- *^ O 00 W n 



■O 'X O O ^ 00 I* — 



*MC0^»0tOl-.X0lOi-HC-1«^l«CDt-000lO^-(C^C0'^Vi<0^-0005O^ 



