194 GOODYEAR ON GUM -ELASTIC. 



CROSS-BOWa. 



Gum-elastic springs are used for cross-bows, as represented in 

 plate vi., fig. 4. The advantage of this spring over the bow 

 is, that it does not occupy much space like the bow. 



TOY GUNS. 



These may be made in a variety of ways, with an elastic 

 spring like the cross-bow described. The only objection to 

 these guns is, that they require care, to prevent their becoming 

 a deadly weapon. 



TEETHING RINGS. 



This is one of the first toys made of the native gum-elastic in 

 France and England, many years previous to their being made 

 in America, of vulcanized gum-elastic. 



BATTLE-DOOR. 



The cork for this toy is made of gum-elastic sponge and 

 feathers, and the bat of a hoop, of gum-elastic whalebone, cov- 

 ered with gum-elastic vellum or parchment. 



PICTURE BOOKS. 



May be made of elastic tissue to advantage, if durability is at 

 all desirable in such an article. 



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