86. B. 



87. B. 



A 



\ 



vn 



yy/. 



~f" /// 



87. A. 



88. 



MEM.CAL.ACAD.il. PLATE XXI 



'./,>'.. 



II ( „ 



IV (;•• 



-mk 



:--'\ 



■Y" 



VI { 



VJIf 



Vili 



//..■ 





86 A 



t? b 



Wl! 



89. 



a ■ 



x;ii: 



XIV (i ig^'^^ 



Y ; - fv* 



XV\ 1 

 XVI ( 



xvn/'i rr- "v^^ 



"/"^ Vr 



XVIllo/i 



-^^ I 



unt.HnriTsnmcr ; ' 



