406 "\VHAIX-FISHE11Y. 



crs, it has been observed, is furnished Avith <i stop- 

 cock, beneath which there is a platform adapted for 

 receiving the casks ; where they are filled with 

 great case, by the introduction of a leathern tube, 

 extending from the orifice of the stoprcock into the 

 bung-hole. At the conclusion of the process of 

 boiling each vessel's cargo manufactured on the pre- 

 mises, the backs are completely emptied of their 

 contents. To effect tins, w^ater is poured in, until 

 the low^er part of the stratum of oil rises to within 

 a few lines of the level of the stop-cock, and permits 

 the greatest part of the oil to escape. The quanti- 

 ty left, amounts, perhaps, to half an inch, or an incli 

 in depth. To recover this oil without v/aste, re- 

 quires a little address. A deal-board, in length a 

 little exceeding the breadth of the cooler, is introdu- 

 ced at one end, a little diagonally, and placed edge- 

 ways in its contents. The ends of the board being 

 covered with flannel, when pressed forcibly against 

 the tvv'o opposite sides of the cooler, prevent the oil 

 from circulating past. The board is then advanced 

 slowly forv^ard towards the part of the back, where 

 the stop-cock is placed ; and in its progress (the ends 

 being kept close to the sides of the cooler, and the up- 

 per edge a little above the surface of the oil,) all the • 

 oil is collected by the board, while the water has a free 

 circulation beneath it. ^Vhen the oil accumulates to 

 the depth of the boaid, its further motion is sus- 

 pended, until the oil thus collected is drawn off 



