: af i cua 3) an ay A. SS - 
bates. 
376 LOWELL—THE CARTOUCHES OF MARS. 
Days before  SURMer Days after 
o R 60 x ane a0 £20 
med 
; 
i 
50 mehr at 
S. Sub-Tropic 
27°S. 
STropte 
pon 
J Equator pal 
ss. 
N Temperate 4° 
425N. 
SubAretic 
SEN. 
15 N, ia 
? to at ea —-< 
240° 260° 280° 300° 320° 340" zoe 
Co Go° 100° 120° 140° £60° 180” 200° 220° 
PHENOLOGY CURVES —MARS. 
= Dead Point of Vegetation. 
Plate XVI. 
