108 



GENERAL SCIENCE 



The Jacketed Stove. One-room school buildings are often 

 heated by jacketed stoves. The jacketed stove consists of an ordi- 

 nary stove surrounded by sheet iron casing set 6 or 8 inches from the 



The principle on uftich atntettafxr&stem. 

 UKrtf is thaCcnlt r**jrt sieaiA^tieVtf aj- 

 gitttftt Cc eaf/l ratiiafcrrc eompftfrn, TieaC 

 it and that all Ihe 'team atmittei sXalllcatt- 

 /tin t/x radiator, at t/tt -same time t/tt 

 to fscajor (ftnuoh the air lint tc thcot- 



am tny en fttur/i 



TMM. fufti, m 



We outline >uresAnaitlluitmte4 

 inmifilti only, net <ay jofrliiultr jft- 



FIG. 86. Vapor Steam Heat. 



" casing," 



stove. The ordinary box stove without this " jacket " or 

 when used to heat schoolrooms, does not distribute the heat of the 

 room equally. Those near the stove will suffer from a great amount 

 of radiant heat given off, while those at a distance will suffer from 



