338 XI. LIQUID COMPOUNDS.— 



syrup; then either pour it into small upright jelly-pots, with covers, 

 and when cold, paste the joints over with paper; or pour it out 

 upon flat dishes, to lie about i inch deep, when set divide it in 

 pieces and dry them. A shin of beef of 91b. produced 9 oz. of 

 portable soup, and 2^ lb. of meat fit for potting. 



USED IN THE ARTS. 



Solution of Isinglass. Isinglass gr. x, water Sij, boil and strain; 

 used as a test for tannin : if for keeping, add spirit of wine Sjss. 



Carpenters^ alue. Cake glue 8 oz., water 2 pints ; soak for a 

 night, and boil to a proper consistence. 



Flour paste^ Colle de pate. Wheat flour and water rubbed 

 together smooth, and then boiled until dissolved, adding a little 

 alum. 



Hard paste. A little powdered rosin is added in the boiling ; 

 aloes is sometimes used to deter insects from eating it. A few 

 drops of any essential oil, or a little camphire, prevents it from 

 growing mouldy ; in a covered jar, it may then be kept for a year ; 

 using a brush with plain water when dry. 



Potatoe paste. Potatoes grated fine lib., water 2 pints and a 

 half ; boil, add powdered alum half an oz. 



Chinese paste. Bullocks' blood 101b., quicklime lib., beat 

 together ; it becomes a stiff* jelly, in which state it is sold, and will 

 keep in cool weather for three weeks ; when used, it is beat down 

 with water to a proper consistence. 



Vemis de colle forte. Carpenters' glue and alum ; used for 

 varnishing furniture to render it less liable to take fire. 



Mucilage of flea-wort seeds. Used to dress muslin. 



French cement. Gum water, thickened with starch powder; 

 used by the naturalists and French artificial flower makers ; keeps 

 for a long time ; lemon-juice is sometimes added. 



Mouth glue, Indian glu£, Colle a louche. Best cake glue, 

 dissolve in a little water, add brown sugar a small quantity, and 

 some essence of lem.ons, pour it into greased moulds, dry it. 

 When used, it is wetted with the tongue, and rubbed on the 

 paper to be joined. 



Liquid glue. Melted glue, vinegar, of each 1 pint, spirit of 

 wine 4 oz. ; used as a cement. 



Solution of starch. Starch 5 gr., water 1 oz. ; used as a test 

 for iodine. 



Sol. of albumen. White of eggs strained 1 oz., water 10 oz. — 

 2. Dried white of eggs 1 oz., water 20 oz. ; both are used as a 

 test for tannin. 



