36 GOODYEAR ON GUM-ELASTIC. 



BLANK GLOBES. 



This invention was suggested by another.* The article 

 may be made of the gritted fabrics, tissue, or vellum, and 

 its use may be deemed very important for instruction in draw- 

 ing, as globes may be drawn upon them by the pupil with the 

 pencil and pen, or with the brush and paints, and afterwards 

 either washed off, or fastened on the globe by means of any 

 transparent varnish. 



EMBOSSED GLOBES. 



These are made of gum-elastic compound, in the same way 

 as hollow ware, and have been before alluded to in the account 

 of that manufacture. These may be said to be much more sub- 

 stantial and durable than wood and plaster, so much so, that 

 they may be used safely as bat and foot balls ; and after the 

 first outlay of capital for moulds, &c., the cost of the manufac- 

 ture will not be greater than for other bat and foot balls, aside 

 from the expense of coloring, which may be done by inking in 

 the moulds in such colors as will stand the heat at the time they 

 are vulcanized. 



ILLUMINATED GLOBES. 



These are made of gum-elastic tissue and vellum, in the same 

 manner as the globes already described, except that they have a 

 funnel made of the same material, which passes through the 

 globe, and which is cemented to it at each pole ; in the middle 

 of the funnel is secured a fixture or cross bar, on which a lamp 

 may be placed. The globe is thereby illuminated and becomes 

 highly ornamental as well as useful for study at night. Al- 

 though it may be turned round, it cannot be turned over with 

 safety. 



■ Mr. Henry Barnard, of Hartford, Conn., for many years superintendent of the State schools in 

 Massachusetts and Rhode Island. 



