



■L /^0/sru/^e: 



I lAY! I, COi W PLmWtI O 



DIAGRAM XVI. — Nitrates and mois 



PA fir 5 /^/v? /^/ii/oyy 



<!. C; g g g ^ g g <g 



, low/. TS,C1RHI»Tim tV 



ICOIMINrvLLB 



Y 



TXSM »P»VE TTTjr 



y 



i 



c, c, 



z. 



^ 



mean daily air temperaiure and daUy 



