TRANS. AcapD. Sci, or St: Lovuts, Vou. XXIII. 
tHtheee eis tdeee siete hee 
i jHEEH! 
ae 
oe 
Hii 
SE BR HT Ba 
SES ati a at a EE 
aes mel RE 
—_—- ail EE HE 
shes sah H 
Sea 
HEU ETT eae Hae EN ENTE REE 
it ee 
Hie HE 
He Sirs: 
ates 
ra 
tit sf 
is: HEH 
iit 
BS 
siete: 
et 
3 
PLATE XLVI. 
Hal 
tii tea 
Hit 
iit 
tt 
i 
STION 
AC 
TIONAL ATTR 
<TATION IN GRAVITA’ 
VAI 
