INDEX 



by 1A.C. Russell B. A. 



' the- top re-. 

 of Tempera, 

 ture ■-,- roi ?/,<• nVy/,/- /„„,,/ 

 side, degrees of Humidity. 

 To use ffic tabies place the 

 index on the line corresponding 

 la the Dei/ hub Temperature 

 with O on the line mnrlied MXI. 

 hah dawn the index until the 

 SaTerence Between the u/ct and. 



util bcfbimd a l„,e indicating 

 the ret/ui red Bumiditg. 



