278 GOODYEAR ON GUM -ELASTIC. 



signature. Bank notes in the United States are kept in circu- 

 lation until they are completely worn out ; they pass through 

 hands of every hue, and through pockets of all grades, until 

 they acquire an odor that would be quite insufferable in any 

 other article, to those who have any regard to cleanliness. 

 Should we not be as particular in respect to the cleanliness of 

 money as to other things ? The indifference of the public on 

 this subject can hardly be accounted for, except upon the suppo- 

 sition of its being taken for granted, that there is no remedy. 

 Notwithstanding the first cost of these notes being more, it is 

 believed in the end they wall be cheaper, on account of their 

 greater durability. 



PORTABLE PICTURE FRAMES. 



Gum-elastic pictures, prints, and engravings are made with 

 portable frames of the same material, which may be either gilded 

 and bronzed to imitate wooden frames, or colored in imitation 

 of different kinds of wood, all of which is done very cheaply. 

 For further description of this kind of frame and its uses, see 

 framed maps, Chapter I. 



TRANSPARENCIES. 



These are made of gum-elastic tissue. There may not only be 

 a great saving of expense in the substituting the tissue for silk or 

 canvas, for transparencies, but the work may also be lithographed 

 or colored, in a style highly superior to that in which they are 

 commonly executed. 



