th:' MaiiufaBurhig of ?WJigrife. J^ 



remove them into jars, and thofc who life jars put them into 

 others. Befidcs tlie lofs of the aectous fpirit, too great heat 

 inehncs the niafs at the hottom of the vclfcl to becom* 

 mouldy, v.hlch renders it unfit for muking verdigrife. 

 Some manufacturer?, to incrcafe the eff'eL''l of the hufks, form 

 them into heaps, which tliey befprinkle with generous wine 

 before they bring them to ferment. 



The fermentation does not always take place at the fame 

 time, nor with the lame energy- Sometimes it commences 

 in twenty-four hours, and fomctimcs it has not l^egun at the 

 end of three weeks. The heat fomctimcs will rife to iuch a 

 height that the hand cannot be kept in the mafs, and that 

 the acetous odour is fo ftrong that one can hardly approach 

 the veHels ; while at others the heat is hardly fcnfible, and 

 foon vanidies. There are even inftanccs of the hufks becom- 

 ing putrid and moiddy without turning acid. The fermen- 

 tation is aflifted and promoted by raifing the heat of the 

 place by means of chafing-dilhes, by covering the veflels 

 with cloths, by Quitting the doors, and by airing the mafs 

 with more care. The dificrences in the fermentation depend, 

 1. On the temperature of the air: in fuujmer the fermentation 

 i;j fpeedier, 2. On the nature of the hullcs : thofe which arife 

 from v,ery faccharine grapes heat more eafily. 3. On the 

 volume of the mafs: a larger mafs ferments fooner, and with 

 niore ftrength, than a fmall one. 4. On the contacl of the 

 air : the belt airtji huflcs ferment beft. 



At the fame time that the lui(ks are made to ferment, a 

 preliminary preparation called tlej'ufoti^a is given to the 

 plates of copper which are ufed for the firll time. This 

 operation is not employed for thofe which ha\e been al- 

 ready ufed, and cgnlKls in diflblving verdigrifi; in water in 

 ^n earthen veflcl, and rubbing over each plate with a piece 

 pf coan'e linen dipped in this folution. 'I'he plates, are 

 then immediately placed cloi'e to each other, and left in that 

 ;:iauutT to dry. Sometimes ihp plates iire only laid on the 



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