By Joseph Sabine, Esq. 



91 



under pane ; so that it allows of the admission of more light 

 than the copper lap, though with similar width of metal. 



The annexed sketches represent the difference between the 

 two sorts. 



Lead lap. Copper lap. 



The lights from whence these representations are taken, 

 are amongst Mr. Loudon's collection of specimens of glaz- 

 ing, at Bayswater ; the lead lap was executed under his di- 

 rection ; the copper lap by the artist employed in the sale 

 of Mr. Stewart's patent. 



The lead being very pliable fits readily, is easily cut to 

 any size or shape, and can be repaired with facility ; when 

 putty is also applied, it assists in holding it firm, and when 

 it is used alone it retains its hold with sufficient firmness to 

 exclude both wind and rain. It seems to possess all the ad- 

 vantages of the copper lap, without its defects, and does not 

 require the addition of putty, unless the panes are very irre- 

 gularly fitted to each other. 



In order to secure the full advantages of a narrow lap, 

 great attention must be paid to the even fitting of the glass, 

 and next, to the good execution of all parts of the work. If 

 the glazing be well done, and the panes lie close upon each 

 other, the laps, though not exceeding an eighth of an inch in 

 width, may be rendered sufficiently weather tight without 

 copper, lead, or putty, for all purposes, except in those 



