UNIFICATION Of FISH-OU* |*| 



PROCESS Tti£ SECOND. 



ib purify, to a great Degree, Fijh+oil without Heat. 



TAKE a gallon of crude flinking oil, or rather fuch as has Procefs a. 

 teen prepared as above mentioned, and add to it an ounce °f^J!f J^"^ 

 powdered chalk j ftir them well together feveral times, as inheat. Agitate 

 the preceding procefs ; and after they have been mixed fome^ th . cha, ^ ! ad,i 

 hours or a whole day, add an ounce of pearl-alhes, diitolved pear i. a fl iesi 

 in four ounces of water, and repeat the ftirring as before. falt water *• 

 After they have been fo treated for fome hours, put in a pint u ^.' 

 of water, in which two ounces of fait are diflfolved, and pro* 

 ceed as before ; the oil and brine will feparate on flanding 

 fome days, and the oil will be greatly improved both in frnell 

 and colour. Where a greater purity is required, the quantity s 

 of pearl-aflies muft be increafep!, and the time before the ad- 

 dition of the fait and water prolonged. 



If the fame operation is repeated feveral times, diminiming Repetition of 

 each time the quantity of ingredients one half, the oil may be 1 e proce s * 

 brought to a very light colour, and rendered equally fweet in 

 {mell with the common fpermaceti oil. 



By this procefs the cod-oil may be made to burn; and, 

 when it is fo putrid as not to be fit for any ufe,. either alone or 

 mixed, it may be fo corrected by the firft part of the procefs, 

 as to be equal to that commonly fold : but where this procefs 

 is practifed in the cafe of fuch putrid oil, ufe half an ounce of 

 ehalk and half an ounce of lime. « 



PROCESS THE THIRD. 



To purify Fijh-bil with the Affiflance of Heat, where the greatefi 

 Purity is required, and particularly for the Woollen Manufacture. 



TAKE a gallon ot crude flinking oil, and mix it with aProcefs j. 

 quarter of an ounce of powdered 1 chalk, a quarter of an ounce fi ^* teft P" r J* 

 of lime, flacked in the air, and half a pint of water ; ftir them w ith chalk and 

 together ; and when they have flood fome hours, add a pint I; "j e J a< J d water 

 of water and two ounces of peari-aihes, and place them overand fimmer it 

 a fire that will juft keep them fimmering, till the oil appearsj ver a fir es aid 

 of a light amber colour, and has loft, all frnell except a hot, and boil . repo f e: 

 greafy, foap*like fcent. Then fuperadd half a pint of water decantation. 



in 



