106 



YEARBOOK, PUBLIC MUSEUM, MJLWAUKEE. 



[Vol. I. 



But the first real and permanent success was achieved in the 

 ])r()duction oi the model of the Malarial Mosquito, enlarged seventy 

 diameters, shown in figure 54. This result gave assurance that the 

 method was i)ractcial. As it is now over three years since this 

 model was installed and. as it has not warped, shrunken, or altered 

 its original pose, it can l)e safely assumed that its lasting (pialities 

 are well assured. Should the model, however, have the misfortune 

 to shake ofif a leg or loosen up in any of its several parts, it may 



Fic. 54. — Celluloid model of Malarial Moscjuito. 



readily be taken from the case and repaired with as little trouble 

 as a wax or plaster cast. Its weight, being a trifle less than five 

 ounces, and its supports comparable in strength to that of a bamboo 

 rod, it is quite sufficiently self-supporting. 



The method pursued in making this model, consisted of wrap- 

 ping the softened celluloid closely, alaout a plaster or wooden form 

 representing one of the dififerent part.s^ — of which there were many. 

 Sufficient surplus material was allowed for trimming and straight- 

 ening the edges, and each edge was finally sealed in its particular 

 resj^ective position. 



