PAINTING IN GLASS. 417 



for the greater security, to apply them on the other side ; especially 

 yellow, which is very pernicious to the other colours, by blending 

 therewith. And here to, as in pieces of black and white, parti, 

 cular regard must always be had not to lay colour on colour, or 

 put on a new lay, till such time as the former is well dried. 



When the painting of all the pieces is finished, they are carried 

 to the furnace to anneal or bake the colours. 



Having often been deligh'ed with the grand effect produced by 

 the windows of stained glass in old churches and monasteries, wo 

 have regretted that such fine and durable colouring should, in so 

 many cases, have been prostituted upon wretched designs inferior 

 to the productions of our sign post daubers. We have wished that 

 some mode could be devised of copying and multiplying pictures 

 upon glass some mechanical mode, which should require the aid 

 of the artist in the first instance only, and leave all the subsequent 

 operations to be performed by inferior hands, as in the case of 

 copper-plate printing. Portraits at least, on a single piece of glass 

 which should perpetuate the features of great men and beautiful 

 women, secure from that decay of colour and of canvas which has 

 already begun to obliterate the finest paintings of the greatest art. 

 ists whom the world has ever produced, might possibly be produced 

 in the following way. 



Suppose, after the outline of a likeness is drawn, that blocks 

 were cut from it after the same manner as for callicoes, or paper- 

 hangings, only with superior nicety, and in greater number for the 

 purpose of multiplying and better blending the tints. 



Enamellers must determine what shall be the proper substances 

 for the different colours, and with what liquid they shall be mois- 

 tened, that they may be readily taken up by the blocks, and thence 

 transferred to another body by pressure. 



From these blocks, and with these colours, let the figure be 

 printed on paper : and, to prevent inaccuracy in bringing the se. 

 parate parts, cut on the different blocks, to unite into a complete 

 vhole, let the paper be placed under a frame secured in an im- 

 moveable position during the operation. The blocks bein* accu- 

 rately squared, all exactly of the same dimensions, and enr'i nicely 

 fitting the frame, cannot, in parsing through it to deliver their se. 

 Teral impressions, make the smallest deviation from their intended 

 places, but must produce an exact picture at least on the paper. 



To transfer that impression to glass, is, indeed, a wotk of uicetjr 

 VOL. vi. 2 B 



