The quicksilver resources of California . - in vapor form andsulphur dioxide (HgS^20 = Hg+S0,). In good practice the temperatures of the fumes as they leavethe furnace appear to come very near to this limit. [SeeChristy, vol. XIV, above cited, page 226.]. Fig. S3. New Idria fine-ore of drawing door. A—Sheet iron hood carrying awayfumes. B — Bracing rod and hood(asbestos covering). C—Iron door iniron-lined chute. D—Ore car. -xk ^^0 v^Nfj.! i i y ^-^A. i>-^ f ? 1^- i T I ;Fi i< iiitiihjil :ai-»nl . •.sstnu) bnr. ?no9tti»baoo io noUi-v

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