278 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 13, No. 13 
(4 
4Z 
fo 
Jo 20 ad 620 90 Bo je so 50 «(40 30 zo 70 s00 9 
Temperature 
/@ 
44 
42 
70 
free /ro7 
42 
4° 
jo ae so @eo 9° Bo 7? eo Jeo 4o Jv zv 470° Soo ae 
