I" 



Amount of raio. 



Temptirature of dew point. 



o r^ 



6* 6 



3 §5 



6 6 



eo 00 X o (N 

 Oi o O — c^ 

 6 — 6 © © 



4-11 + 111 + 1 + 11 



X 00 X 



•b— © 



©6 



09 © 



•o w » o a> 



+ + + + I + + + + + I I 



Temperature of the air. 





yffO 

 ©6 



O© 



0> « 00«O <N 

 — «© ©"^ 



+ + + I I + + + + + I I 



^ 



Pressure of the atmosphere. 



© — 



© © © 



© © 

 © © 



S5? 



© © 

 6© 



i+i I i+i 



© 6 © © © 

 I I I + I 



^ 



Mean weight of a cnbie foot 

 of air. 



^ w «o « W^ 





o »o t^ ©♦ OS 



O X <N (75 ©» 



Mean whole amount of water 



in a vertical column of 



atmosphere. 



t* t» «p 



C3 C9 C9 



(M«040je2©«e-«^ 



XCOWWO — "OOSft 



Mean degree of humidity. 

 (Complete saturalioD = 1.) 



aDXXXt>»r>»xa6xxxx 

 ©©©6©©©©©©®© 



Mean additional weight of vapour 



required to saturate a 



cubic foot of air. 



2©«5C0X5>iN«Cr^3i»O«OQQ 



g'^Tf«0'^05«©xr>.'^Tfe< 

 ^6©©©©-^ — ©6©©© 



Mean weight of vi^aour in 

 cubic foot of air. 



•a T r v* r 



E CO CO <?» « 



o 



X — — 0<0i|^i*«O 



w «b «o o Tf< « « o« 



Mean elastic force of vapour, 



or mean amount of water mixed 



with the air. 



t>. — CO I© 



CO r^ »0 i^ 

 (N <N (N O* 



©66© 



66666666 



?5 



Mean temperature of dew point. 



(NOX<MXCOCOXC5Tf<OJ© 



66x'^666cbTf6 — -^ 



Tf-»tc0-^-^«O«O«O»O-^-rt<C0 



Mean amount, to 10. 



X CO w © 



f>. t* r* X 



O'T'SCOC*— <;o»o 



Strength, to 6. 



c^Oi(Nx«o©-^a> 

 — 6 — 66-^-1^6 



^Tj«0»0»XOJO>OS-^-^Tf«M 

 J5 



:«o«oocooot*eoeo«o^«o 



^©©♦•ow-^oot^w-- — ©w 



-CtO-^^D'OOCOW-^^OiXCO 



Kt^0O'*C<^«O00"^"*O>©»W 



©©CO— ©«0 — ©:Tt<C< 



l©'^©CO©-<©©© — ©c» 



WCOW-TfCO — — «-vc<icoco 



§ 



?{ 



II* 



s §2 a a 





175 



