484 Popular Science Monthly 



If You Lisp or Stammer Train Your 

 self with a Mirror or a Candle 



1ISPING and 

 j stammering 

 are separate imper- 

 fections of speech 

 which require en- 

 tirely different 

 treatment. 



Lispers, for in- 

 stance, can be cured 

 in a short time by 

 tongue and palate 

 gymnastics. They 

 "lithp" simply be- 

 cause they do not 

 work their tongue 

 and palate proper- 

 ly. By making the 

 child speak before 

 a mirror, however, 

 the teacher can correct 

 these mistakes. 



Stammering is a nervous 

 disorder which cannot be 

 cured so easily. The pupil 

 involuntarily applies too 

 much force at certain parts 

 of the vocal organs, caus- 

 ing the stuttering and a 

 sputtering with which we 

 all are familiar. The cure is 

 to relieve the over- worked 

 parts by distributing the 

 energy evenly. This is 

 learned by pronouncing 

 certain flowing sounds in 

 front of a candle until the 

 flame does not flicker. 



graphic plate only one such impression, or 

 image, can be obtained. With the motion 

 picture film, however, a fresh piece of film 

 is continually ex- 

 posed to the lens. 

 Just such an ar- 

 rangement exists in 

 the human eye. An 

 emulsion called vis- 

 ual purple acts as a 

 film of great lati- 

 tude, renewing it- 

 self as soon as it is 

 struck by the light 

 and discolored. It 

 adapts itself to 

 various intensities 

 of light, protecting 

 the retina from too 

 brilliant a glare at 

 all times. 



Above: Practising breath 

 control with a candle flame. 

 Below: Tongue and palate 

 gymnastics before a mirror 



The Original Motion Picture Film — 

 It Is in the Human Eye 



THAT the human eye and the photo- 

 graphic lens are very much alike in 

 design and operation is a well known fact. 

 If you look through a photographic lens you 

 will see nothing clearly. To 

 perceive the image a piece of 

 ground glass or a plate of film 

 is necessary. A plate is a 

 piece of plain glass which acts 

 as a support for an emulsion. 

 This emulsion decomposes 

 when struck by light, and the 

 decomposition is made visible 

 by a process called develop- 

 ment. With an ordinary photo- 



A Self-inflicted Tug- 

 of-War to Increase 

 Your Height 



TO increase the height 

 by a stretching pro- 

 cess, to vivify the spine 

 and stimulate the nerves — 

 these are the purposes of 

 an odd machine known as 

 the pandiculator, invented 

 by a chiropractic specialist 

 for use in the practice of 

 that method of treatment. 

 The apparatus is simple, 

 consisting of a couch with 

 a headpiece and a foot 

 rest that can be extended 

 by the operation of a cog 

 and ratchet device at the side. The person 

 who wishes to. increase his or her height is 

 fastened in the machine and the stretching 

 is done by turning the ratchet. 



It is extremely doubtful if the machine 

 illustrated could do more than exercise the 

 neck and abdominal muscles. 



After you are strapped in the machine you stretch yourself as 

 strenuously as you like by pulling the ratchet device at the side 



