THE MICROSCOPICAL AQUARIUM. 



39 



cut, so as to leave a frame about three-quarters of an 

 inch in width all round. This frame should be covered on 

 the inner side with red-lead in which should be bedded a 

 pane of glass, cut to the exact size of the front or back. 

 The outside should now be painted a suitable colour, or 

 Avhat is better coated with Brunswick-black. All it now 

 needs is to be mounted on a piece of board, and retained 

 in position by four strips of wood fixed on by small 

 brads. The tin can be most cleanly cut out with a pair 

 of stout scissors, — if the lady of the house is not looking 

 on. The biscuit-tin will cost one shilling, and the whole 

 of the other materials, — glass, red-lead, Brunswick-black 

 &c., will not exceed a similar amount. So that the 

 microscopic aquarium need not cost more than a couple 

 of shillings and a very small amount of labour. 



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