X. 



1917 



» 1)0 JJoc 



[1 



^/W^ 



^^I^X 



JZ^ 



Cc I7« J 



to J}0 i 



IN. 



;3o ; 



<0 / <o / 



Sc 6 « 4 



20 «<<! i 



•» 7 '" 7 



to too a 



211 tio S 



II. 



?; /« 



/«/ « 



/«? // 



:w 



^1 



o ,^1 H. 



o V/ " 



;?</ «.D 21.S 2} 



W /< 



Hf 2}. 3f.f Zl, 



2if 11 



o }}.o H 



iiyo ifO lijc <;. 



(Tc n" i%' ^' 



i,.o </ 



"'^/-^ <— - 



<e /70 /. 



1918 



9» /J» i»o I'o 2 



JO 2;« Z 



Ic fie f 



^j ft iCj II 



20 i<0 I 



/2, I) 



£0 i 80 7 



o Of 



ic 7. £0 7. 



12. 



/«,- // 



'/^^ 



/// /7 



^>- /^ « /J/ 



"•/ 2J 



^7 2} 



yt> }}o ifo n 



i)C <) 



o <;o <; 



£Du 



<;„ if 



o (JO 



Figs, ii and 12. — Frequencies of occurrences of periods of different lengths 

 derived from harmonic analysis of temperature at Buenos Aires, 1917 and 

 1918, in single periods. 



