34 



THE ROYAL SOCIETY OF CANADA 



7a Katfiaromefef 



fnpanaon ià/i^ Co^f^ot ' 5 



Regenerator Coil - / 

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p/u/f} ^cyy/ri Hash f^ 



CFNFRAL ARRANGFMFNT Qf HYDROCrN IJQUEnCR . 



