1815.] Mamifactiire of Farina from Potatoes. 363 



to receive a box or chest, fitted in the manner of a drawer, to con- 

 tain the pulp as it falls from the machine, or it may fall into any 

 vessel placed underneath. 



The pulp in the vessels in which it is collected should be com- 

 pletely immersed in water, and well stirred ; the separation of the 

 farina, by its falling to the bottom, will speedily take place. The 

 fibrous and refuse parts should be first removed, and the farina 

 afterwards repeatedly washed, until it no longer communicates any 

 tinge to the water. It is then sent to the stove or drying apartment, 

 put into boxes, and dried. Care should, however, be taken that it 

 does not dry too rapidly. Wherever the business is conducted upon 

 a large scale, a machine for washing the potatoes* should be 

 erected, and it might be contrived to receive motion from the 

 power that directs the grinding machine. 'J'he vessels containing 

 the pulp should be so arranged that a stream of water could be 

 made to pass through them at pleasure. The pulp, after the first 

 separation of the farina, still retains a quantity of farinaceous 

 matter ; but it will, perhaps, be more profitable to convert it into 

 food for hogs, with such other additions as may be thought neces- 

 sary, than to steep it again for the purpose of extracting any re- 

 maining portion of farina. It will be probably best to give it to the 

 hogs boiled, along with a moderate proportion of boiled potatoes. 

 This disposal of the refuse pulp would nearly defray the whole 

 expense attendant upon the manufacture of the farina. 



*^* This machine would operate with good eflect for reducing' 

 apples to a pulp for making cider, as it is extremely expeditious and 

 eifectual in its operation. 



Article IX. 



Aitronomlcal and Magnetical Observations at Hackney JVick. 



By Col. Beaufoy. 



Latitude, 51^ 32' 403" North. Longitude West in Time 6"-rj,V« 



Mar, 21, Immersion of Jupiter's fl2'> 24' 02" Mean Time at Hackney Wick. 



yd Satellite \ J2 24 08-8 Ditto at (ii.'ciiwicli. 



War. 'iS, Immerbion of Jupiter's J 12 24 18 6 Ditto at Hackney Wick. 



Ut Satellite \\2 24 2.5-4 Ditto at (ireenwich. 



April .'{, Kmeriiou of Jiipiter'i. ( 10 57 .50 Ditto at Hackney Wick. 



IstSatcllite \10 5« 02-2 Ditto at (;rcrn«icli. 



April 8, Emersion of Jupiter's ( 9 24 28- 1 Ditto at Hackney Wick. 



2d Satellite \9 24 252 Ditto at Creenwicli. 



April 12, Enirrsion of Jupiter'K f II 31 38-2 Ditto at Hackuey Wick, 



4tliSatellite Ill 31 45 Dillo at (ireenwich. 



April 15, Linertiou of Jupiter's J 12 00 27 Ditto lU Hackuey Wick, 



»d Satellite \12 00 33-8 Ditto al tireenwicli. 



• ModcK of two mncliinej proper for nn«hiiig the cartli from potatoes may be 

 •«cn in III* Koriely'n repo»itury. 



