BUILDING MATERIALS. 259 



12. Glass. This indispensable article for buildings is sold under the 

 name of " sheet window-glass," which is divided into four qualities 

 namely, best, seconds, thirds, and fourtlis. Best is the first quality of the 

 kind manufactured ; seconds is a medium quality ; thirds is that which 

 is generally used for common glazing ; and fourths is the poorest descrip- 

 tion made, being very inferior, and unfit for general use. The following 

 price-list will show the value of each kind. The prices are given per 

 foot superficial, including glazing : 



Best. Seconds. Thirds. Fourths. 



12 by 9 inches, T Vinch thick, o' 8 6 5 4 



14 by 10 10 7 5^ 4 



18 by 18 10 08 06 05 



24 by 24 1 1 9 6 5 



30 by 30 '12 10 07 06 



The best quality of plate-glass, of a size about a foot square, costs 

 2s. 2d. per foot superficial. 



13. Paints. The painting of woodwork, both in the erection of farm- 

 buildings and cottages, is an important point to be attended to ; and it 

 should also be repeated from time to time. In fact, it should be a rule 

 on estates that at least all outside wood and iron work of buildings 

 should receive a coat of paint once in every two years. There are many 

 cheap paints to be had, and it is no excuse to leave painting undone on 

 the score of expense. The two colours generally used for preparing any 

 other colour are lead and white, and the oil used for mixing them is lin- 

 seed, and also turpentine. 



The following are some receipts for the mixing of paints for outside 

 work : 



For making a stone colour, use 



lb. 

 Whitelead, ....'.... 2 



Brown amber, ....... OJ 



Yellow paint, ....... OJ 



Linseed-oil. 





For making a white paint, use 



Parts. 

 Whitelead, ........ 80 



Boiled linseed-oil, ...... 10 



Raw oil, . . ...... 10 



Turpentine, ........ 5 



For making a drab colour, use 



lb. 

 Whitelead, ........ lj 



Brown amber, ....... 



Yellow paint, -^ . . 0^ 



Linseed-oil. 



