VARIETIES OF CANE MILLS. 



77 



of delivering as much juice in a given time, as mills of 

 more rapid motion could do, Dr. Mitchell says, in a 

 pamphlet published after the above, — " On the estate of St. 

 Ange, Sinson, (Martinique,) whose establishment presents 

 every applicable modern improvement, a 15 horse engine 

 drives rollers 24 inches in diameter, 3 revolutions per min- 

 ute, expressing 69 per cent, of juice from ratoons contain- 

 ing much woody fibre, and yielding regularly 900 gallons 

 per hour. Worthy Park (Jamaica) has a water wheel, 

 once of great power, and a steam engine. The former, 

 with 9 horse power of water, drives rollers 24 inches in 

 diameter, and 62 inches long, 2 J to 2\ revolutions per 

 minute, and delivers 800 gallons per hour. A 14 horse 

 condensing engine (1| lbs. pressure) turns rollers 24 inches 

 in diameter, and 48 inches long, at 2 \ to 2\ revolutions 

 per minute, and delivers 200 gallons per hour. A mill 

 giving 70 per cent., turns out the megass laminated, not 

 lacerated, when the speed is from 2J to 3 revolutions per 

 minute, while at double that speed, the mill will not give 60 

 per cent, and tears the megass to shreds. Dr. Evans sug- 

 gests rendering velocity uniform by regular feeding. This 

 may be suitable to small mills, but not to leviathans that 

 gorge from 8 to 10 tons per hour. Machinery of this 

 kind should regulate itself." 



Mills of this improved construction are at present being 

 made in this country by our engineers, but principally for 

 foreigners. In Glasgow especially, this manufacture is 

 carried on to a large extent by Messrs. Neilson & Co., and 



