Cements, Mortars, Paints and Glues. 73 



Paint and Protective Compounds, continued. 



the oil by a gentle heat. The lime must be slaked in cold 

 water and dried in the air until it falls into a fine powder; 

 then mix with # part of the milk, adding the mixed oil 

 and pitch by degrees ; add the remainder of the milk. 

 Lastly, add 3 Ibs. of the best whiting and mix the whole 

 thoroughly. 



3. Slake YZ bu. of lime in boiling water, keeping it cov- 

 ered ; strain and add brine made by dissolving i pk. of 

 salt in warm water, and 3 Ibs. rice flour, then boil to a 

 paste ; add YI Ib. whiting and i Ib. of glue dissolved in 

 warm water. Mix and let stand for a few days before 

 using. 



FIRE-PROOF PAINT. In a covered vessel slake the best 

 quick-lime, then add a mixture of skim-milk and water, 

 and mix to the consistency of cream ; then add 20 Ibs. of 

 alum, 15 Ibs. of potash and i bu. of salt to every 100 gals, 

 of the liquid. If white paint is desired, add to the above 

 6 Ibs. of plaster of Paris. 



FOR DAMP WALLS. i. % Ib. of hard soap to i gal. of 

 water. Lay over the bricks steadily and carefully with a 

 flat brush, so as not to form a froth or lather on the surface. 

 After 24 hrs., mix ^ Ib. of alum with 4 gals, of water ; 

 let it stand 24 hours, and then apply it in the same 

 manner over the coating of soap. Apply in dry weather. 



2. ij^ Ib. resin, i Ib. tallow, i qt. linseed oil. Melt to- 

 gether and apply hot ; two coats. 



PAINT FOR GREENHOUSE ROOFS. Make a paint of ordi- 

 nary consistency of white lead and naphtha. It is removed 

 from the glass by the use of a scrubbing brush. Make it 

 thin or it is hard to remove. 



Ordinary lime whitewash is good for temporary use. 



WATER-PROOFING PAINTS. For leather. i. >^ Ib. of 

 shellac, broken into small pieces in a quart bottle ; cover 

 with methylated spirit, cork it tight, put it on a shelf 

 in a warm place, and shake it well several times a day ; 



