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. 

 Male, female, and egg^ 



Walking Sticks 

 (Tu 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. ^ 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 metliod 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. 



