. Röntgen rays and electro-therapeutics : with chapters on radium and phototherapy . Fig. 200.—Extra-Oeal Method in Dental Skiagraphy.—LS, lead screen for the protection ofthe operator. The arrows indicate the variable positions to which the authors tube-holder may beshifted. The illustration depicts the sensitive plate placed upon a book and the lads left (suspectedside) cheek resting on the plate, the dotted line shows the path of the rays.

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradiolo, bookyear1910