796 BB. CHASE'S RECIPES. 



a question of thoroughly making bright the surface to be soldered, and using 

 good solder and a clean swab, with muriatic acid. 



Remarks. — The muriate of zinc is the article to use in this, as in all other 

 solderings. 



Glass Globes, to Clean.— If the globes are much stained by smoke, 

 soak them in tolerably hot water with a little washing soda dissolved in it, then 

 put a tea-spoonful of powdered carbonate of ammonia into a pan of lukewarm 

 water, and with a tolerably hard brush wash the globes till the smoke stain 

 disappears ; rinse in clean, cold water, and let them drain till dry. They 

 will be quite white and clear. 



RerriaTki.—K.q}xa. ammonia, which is more likely to be in the house, will 

 do as well, but a tea-spoonful of either is not enough for a " pan of water,'' 

 but only for a pint of water or one quart at most. 



1. WTiite Paint, to Clean.— Take a small quantity of fine whiting 

 on a damp piece of flannel ; rub gently over the soiled surface and the effect 

 will almost equal the original purity. 



Remarks.— '$>QQ the next receipt for washing off, if needed. 



2. Oil-Painted Surfaces, to Clean.— Take a piece of soft flannel, 

 put it in warm water, and squeeze it till it feels dry ; next dip gently on to some 

 very finely pulverized French chalk, and rub the painted surface with the flan- 

 nel ; the effect will be the removal of all dust, greasy matter, and dirt ; the 

 surface is next washed with a clean sponge and water, and dried with a piece 

 of wash-leather. This method does not injure the paint like soap, and pn> 

 duces a very good result. 



iJemarAa— Wash-leather is split sheepskin, prepared as chamois, and used 

 for the same purposes, very properly, too, because much cheaper. 



Tracing Paper, to Make.— To wet common drawing paper, or any 

 other kind, with benzine, it becomes transparent immediately, and can be 

 placed over a drawing, or picture, to be transferred, by tracing with a pencil, 

 ink, or water-colors, which will not spread nor run upon its surface. This is 

 condensed from the Engineering and Mining Journal, and may be relied upon. 

 If the work is not completed before the paper loses its transparency by evapo- 

 ration of the benzine, you can dampen that part again, to complete it. Thia 

 is a new discovery, and valuable. 



1. Glass, to Break as You Like.— File a little notch in the edge, 

 at the point you wish to break from ; then put a suitably shaped red-hot iron 

 upon the notch, and draw, slowly, in the direction you wish. A crack will 

 follow the iron, caused by the heat, if not drawn too fast. 



2. Glass, to Drill. — To drill glass, use a file drUl, and keep it wet 

 with a mixture of camphene and spirits of turpentine. Heretofore turpentine 

 has been used alone. The camphene helps to give the drill a better bite.-. 

 Scientific American^ 



Remarks. — It is daimed that a Stubb's triangular, or 3-square file, ground 

 (c proper shape, makes the best drill for glass, and some have claimed that 



