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FRUIT PACKAGE ENVELOPE. 371 



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PACKAGE ENVELOPES. 



Envelopes have already been noticed in another chapter, as 

 useful in certain cases for the protection of papers. That which 

 is of more general utility, is a water-proof envelope for the safe 

 transportation of merchandize and provisions, especially of those 

 that are perishable, such as flour, fruits, sugar, salt, &.c. In 

 consequence of the recent invention of plated canvas, and pla- 

 ted coarse bagging, by the method described. Vol. I., of this work, 

 chapter , it has become practicable to make envelopes so 



cheap for such purposes, that it is believed this will be found to 

 be one of the most useful applications of gum-elastic. 



The cheapest of these envelopes made of coarse canvas or 

 bagging are plated or coated only upon the inside in this way. 

 The wear is thus brought upon the outside of the bagging, which 

 serves to protect the w^ater-proof coating upon the inside from 

 damage. An inner apron or mouth, made of a lighter gum- 

 elastic material, is cemented at the top upon the inside of the 

 envelope. This apron or mouth being tightly fastened, will ex- 

 clude all wet or dampness. One great economy in the use of 

 such envelopes in addition to their close stowage for shipping or 

 transportation, consists in their adaptation for use a great num- 

 ber of times, for the same or for different purposes, on which 

 account they become valuable to purchasers at retail, either for 

 sale or for use, instead of being wasted or burned, as is often 

 the case with cheap barrels and boxes. See Chapter fig 



FRUIT PACKAGE ENVELOPE. 



These are made from heavy plated canvas for the same pur- 

 poses as the envelopes before described. They are intended not 

 I only to protect their contents from damage by wet, but also to 



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