APPENDIX. 405 



ing the boat by the strength of his arm, exerted on a hori- 

 zontal pole; elevated about three feet above the canal, and 

 in the same line of direction, in the same manner as is 

 practised in the Duke of Bridge-water's tunnel, where a man 

 pushes from 70 to 100 of our loads of coals at a time. The 

 larger boats on the upper canal, designed for the raw lime- 

 stone, are to be conducted by a man on each side of the ca- 

 nal, pushing a pole stretched across, and fastened to the 

 leading boat. Tims they will push or pull,- so as to suit 

 the size and windings of the canal better than a horse, and 

 can do more work than ten horses on a road in the course 

 of a day. 



The boats are to be marked with figures, to ascertain, 

 the quantity they contain by their depth in the water. 



Mr Low meant to have laid waggon-ways for his car- 

 riages, but thinks he can have all their advantages, with- 

 out the expence and trouble, by laying the dry smooth 

 materials, with which the quarries abound, on a well form- 

 ed flat-road, and using such broad wheels as will act as 

 rollers, and rather smooth than cut the ground. By this 

 saving, he will be enabled to accommodate the country 

 with coal and lime in greater quantity, and on more fa- 

 vourable terms, than could otherwise be afforded. And, 

 to secure this advantage to the public more effectually, he 

 works part of the lime- quarry under ground, that the quar- 

 ry-men may be independent of the weather, and be able, 

 at all times, to afford a quantity of lime suited to. the de- 

 mands of the country. 



His coal, which stretches through 130 acres of ground, 

 consists of live seams of different kinds, viz. a splint, three 

 feet thick ; a parrot, from tht*e to four and a half ; a cherry, 

 20 inches ; and tv/o seams of blind-coal, so called, from its 

 emitting neither flame nor s?noke, one of which is three 

 feet five inches thick. ^ThltTias.t is used wicfly for drying 

 malt, but may be properly applied in making Tyle, as it 

 is said to burn clay to a blue colour, by means of the sul- 

 phur it contains. 



