370 LOWELL—THE CARTOUCHES OF MARS. [Dee 4, _ 
Days before ipl aie Daysafter 
= 
Lat.2s°N | 
Phrixus 
MeanLong:so° 
Lat 25°N 
PyriphiegethonN. 
Mean Long 140° 
Lat.23°N. 
Djithoun 
Mean Long o° 
S 
(@) 
@) 
i | 
@) 
Lat 23°N 
Jamuna N. 
MeanLong 38° 
Lal 23°N 
Libycum 
Mean Long. 269° 
iw 
ite 
Lat.z2"°N 
Acheron 
Mean Long 133° 
Lat 22°N 
Indus 
MesnLong 20° 
a 
let 22°N 
Nilokeras/1. 
MeanLong 48° 
Lat 21°N 
Lethes 
Mean Long 240° 
Lat 2iN. 
Thoth 
Mean Long 258° 
ign 
we 
~ 
oe 
©) 
= MinimumVisibility NORTH TROPIC CANALS 
SS 
Plate VI. 
The broken lines denote such portions of the curves as for certain intrinsic 
reasons seems the more probable. 
4 
if 
