270 



GENERAL SCIENCE 



REMOVAL OF STAINS AND GREASE SPOTS 

 Make Tests on Different Stains which You may Find at Home. 



Nature of Stain. 



Blood. 



Chocolate or 



Cocoa. 

 Enamel. 



Fruit, tea, coffee, 

 wine, beer. 



Sugar, glue, etc. 

 Grease, oil, wax. 



Paint 



Silk Goods. 



Water, folio wed 'by solu- 

 tion of neutral soap in 

 methylated spirit. 



Cover with borax and 

 soak in cold water. 



As paint, or with a mix- 

 ture of acetone and amyl 

 acetate. 



White Silk. Water, fol- 

 lowed by potassium per- 

 manganate, and removal 

 with sulphuric acid of 

 the brown stain pro- 

 duced. 



Colored Silk. W T ater, fol- 

 lowed by sulphurous 

 acid, or hydrogen of per- 

 oxide, if the colors are 

 fast to these reagents; 

 otherwise, methylated 

 spirit and soap. 



Water. 



Benzine, benzol. (See 

 also Paints and Iron 

 Mold.) 



Ether, aniline acetone, ni- 

 trobenzine, chloroform, 

 carbon tetrachloride. 

 If old soften with amyl 

 acetate. Then remove 

 with gasoline and gaso- 

 line soap. Lacquer may 

 be removed by dissolving 

 linseed oil with amyl 

 alcohol, and the insol- 

 uble coloring matter 

 washed off. 



Woolen Goods. 



As silk goods. 



As silk goods. 

 As silk goods. 



As silk goods. 



As silk goods. 

 As silk goods. 



As silk goods. 



Cotton or Linen. 



Water, followed 

 by sodium hy- 

 pochlorite. 



As silk goods. 



As silk goods. 



W T ater, followed 

 by sodium hy- 

 pochlorite. 



Colored Goods. 

 Aqueous soap 

 solution and 

 ammonia. 



As silk goods. 

 As silk goods. 



As silk goods. 



