XI 





8 



i 



I- 



Amount of raiii. 



16 — 6c*66© — oow — 

 ° + + T I T4-4-4-T+-H + 



Temperature of dew point. 



Temperature of the air. 



o» — — i,6©we«6 — c«b 

 + 1 I I I I+ + +I+ + 



w — o — — w-^^o — oo 

 +1 l+l I+++I + 



Pressure of the atmosphere. 



g6©©©©©66©c66 

 - \+++\ l+l j+j I 



Mean weight of a cubic foot 

 of air. 



g05 — — «)«0t*©*^<005« — 



Mean whole amount of water 



in a vertical column of 



atmosphere. 





Mean degree of humidity. 

 (Complete Huturation = 1.) 



©©©©©©©sooo© 



Mean additional wei»;ht of vapour 



required Jo satumte a 



cubic foot of air. 



.SoTf<«pgiQpX'?*QCX'<i«(r5Tj« 

 ►-©©©©©©^6©6©6 



Mean weight of vapour in a 

 cubic foot of air. 





Mean elastic force of vapour 



or mean amount of water mixed 



with the air. 



= 6c>666666©66© 



Mean temperature of dew point. 





Mean Amount, to 10. 





Strength, to 6. 



»o©*»Oi« — a>05©© — CO 

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t^X — WWCOWW^W-^O 



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 as 



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