206 



IOWA ACADEMY OF SCIENCE 



public school, as well as to music teachers and musicians every- 

 where, in private studios or conservatories. Because of its wide 



Fig. 22. 



availability science will have at hand practically unlimited 

 amounts of data to be used in drawing scientific conclusions, or 

 formulating laws. 



Source 



AStrob o scop/c 



Ref/e 



Fig. 23 — Lighting Scheme in New Tonoscope. 



Its uses are numerous, but none would seem to be more im- 

 portant than its employment in giving to children correct im- 



