13 



the unknown," by the use of some untechnical word 

 or some object already well known to the observer, 

 to connect his previous knowledge with the idea to 

 be illustrated. Thus: "The Cormorants" on a label 

 means more to mcst people than ki Phalacrocoracidae" 

 does; it is, therefore, given the prominent place on 

 the family label. 



