THE HISTORY OF OTOSCOPY 
Toynbee’s illuminating speculum

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Hinton's Modification of Toynbee's Illuminating Speculum
Hinton's Modification of Toynbee's Illuminating Speculum
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THE OTOSCOPE
THE OTOSCOPE
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MICROSCOPY
MICROSCOPY
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THE TELEOTOSCOPE
THE TELEOTOSCOPE
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