. Radiography and radio-therapeutics . rolytic interrupter, valve tubes are necessary. A suitable tube-holder,with efficient protection and with the necessary fittings for therapeutic work,is required, viz. tripod for treatment of ringworm, pastille holder, filters,etc. A simple examination-table with three-ply wood or canvas top, and asimple screening-stand are requisite. A vellum window may be fitted intoa wooden frame which can be moved to any portion of the couch. Thisallows practically all the rays to pass through to the fluorescent screen,and gives the maximum value in screening. These m
. Radiography and radio-therapeutics . rolytic interrupter, valve tubes are necessary. A suitable tube-holder,with efficient protection and with the necessary fittings for therapeutic work,is required, viz. tripod for treatment of ringworm, pastille holder, filters,etc. A simple examination-table with three-ply wood or canvas top, and asimple screening-stand are requisite. A vellum window may be fitted intoa wooden frame which can be moved to any portion of the couch. Thisallows practically all the rays to pass through to the fluorescent screen,and gives the maximum value in screening. These may be combined in 116 ARRANGEMENT OF APPARATUS 117 an apparatus which may be used for either purpose. A fluorescent screen,protected with lead glass and provided with hand-guards, a supply ofX-ray tubes, X-ray-proof gloves, Benoist radiometer, oscilloscope tube,milliamperemeter, and photographic plates are also necessary. Wheninstantaneous exposures are to be carried out, a cassette for plates with anintensifying screen must be Spinlermeter
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