Radio, miracle of the 20th century ... a story of human achievement that stands unrivalled in the history of humanity, together with a colorful portrayal, giving a broad, general view of the whole subject of wireless telegraph and telephone and its marvelous development (1922)
Drinker, Frederick E. [from old catalog], Lewis, James G., [from old catalog] joint author · [Philadelphia, Printed by National publishing co.] · leaf 167
T3<Vt-V DO c *M o~ Eg rf.2^ +5 <j Mb 5 ^ be fa *>.£ fa gg £ -^ H |.2 3 a-. fa _§^ >* s» fc Q ^ - fa e 2 gtwc £ & »«~ Pio o c oo (B C … MIRACLE OF THE AGE 145 Glands along the tube or canal secrete wax which guardsthe approach to the drum and protects it. As frequentlyhappens, through injury or illness there is an inflamma-tion which interferes with the flow of the secretion andthere is an excess of wax which hinders or prevents…
Radio
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