Rejuvenation is, in these days of young old-men and old young-men,
a word to conjure with. The astute purveyors of mechanical devices,
pills, lotions and systems of physical culture sold by the mail-order
plan have been quick to realize the wonderful “come-on” possibilities
inherent in the word. The result has been the interminable repetition
of the claim for renewed youth achieved through hundreds of substances
and appliances. The post office department itself is hardly able to
keep pace with the new developments in the field and its fraud orders
are issued usually after the promoters have reaped a fine harvest.