PLAN FOR INSECT STUDY 53 



school collections. Another way, after the insect has 

 been properly "stretched," or "spread," is to mount per- 

 manently in the depression of a block of plaster of Paris, 

 a plate of glass just fitting the plaster block being 

 fastened with gummed paper, as a cover. Most moths 

 and butterflies in our large museums are now mounted in 



FIG. 17. WALKING STICKS 

 Male, female, and eggs. (To show method of mounting) 



this way for exhibition. This method has the disadvan- 

 tage of allowing only one side to be seen. 



The method here advocated, which, I think, will super- 

 sede all others when its advantages come to be prop- 

 erly understood, consists in simply inclosing the insect 

 between two plates of glass. 1 Since our method of spread- 

 ing insects depends upon properly exhibiting them in this 

 way, I will describe it in this connection. 



1 I am indebted for this method of mounting insects for school collec- 

 tions to Miss Martha F. Goddard, who found it in use in the Swiss schools 

 and kindly described it to me. 



