1922] THONE—STARVED ROCK 365 
YURUPETTIP PTT ry Tere err erp rere Pere eee ee he 
10 20 30 40 50c 
e 
J 
AVW 
1 
0 
t) 
Inn 
ANN 
Isnony 
te Suu «euewn— “ a - 
NOUR we Surun. seNhun NA AL UNS MONK SAAS WN— SAAB HOR SON= NON SUN AWOHPENS SDURON= “HU eEN= WEUauUNn— 
10 2 30 40 C 
piliprittpilii Pei lite 
Fic. 5.—Mean daily maximum and minimum air temperatures at the seven 
stations; a zero at base of column signifies data lacking for the peri 
