TRANS. ACAD. Scr. of St. Louis, Vou. XIX. PLATE V. 
ee 
e oo « ee... ee wee ioe 
‘ — ~ 2 
F ge 
s ms . Sia gnonoreinsty 
Fe i : — 
ier <= ‘i s 
—— _— 
> om 
ot 2 es 
set a ine 
2 me 
aa seomeoe 
‘ 
if 
bs 
pm 
RS Ge ie 
cae ; a “0 
saeco ae ee eee mee ty a 
ee ae” onesie — AO ei a Metis 
eS ee ae tin niin 
ane € pas ia 
ee ge ge panne 
i = ee. 
POSITIVE LINE. GROUNDED POINT BELOW. 
