CHAPTER VI. 



SCREENS. 



this head comes the sheet, hung in 

 the required position by supporting cords, and 

 screens fixed on built-up frames. 

 First, as to the simple sheet. A badly-hung sheet is 

 an abomination. It should be so hung that there is a cer- 

 tain pall upon it from the centre to the edges all round, 

 and this may b3 brought about by following the directions 

 now given. The sheet may be made of either linen 

 or cotton. I prefer the latter, because it is cheaper, and 

 more opaque, and we shall presently see that opacity car- 

 ries with it certain advantages. . If the sheet is of such a 

 size that it must be joined (that is to say, if it be more 

 than about 10 feet square), the necessary seams should lie 

 horizontally, not vertically. A sheet in which the seams 

 are vertical, is liable to hang in festoon-like folds ; but if the 

 seams be horizontal, it will hang straight, so long as its top 

 edge is properly secured. The sheet should have along 

 this edge a broad hem, in which is run a strong cord- 

 This cord should be firmly fastened to the corners of the 



