t 35 ° 1 
XIV. Particulars of the Discovery of some very singular Balls 
of Stone , found in the Works of the Huddersfield Canal. By 
Mr. Benjamin Outram, Engineer to the Huddersfield Canal 
Company. Communicated by Sir Joseph Banks, Bart. K. B. 
P. R.S. 
Read April 21, 1796. 
Jl he Huddersfield canal is to be carried through that chain 
of mountains which extends from the Peak of Derbyshire, in a 
northward direction through Yorkshire, & c. into and through 
a great part of Scotland, by pursuing from the navigation at 
Huddersfield a deep and narrow valley to Marsden, where it 
enters the north-eastern foot of one of these mountains, called 
Pule Hill, under which it is to be extended south-westwardly 
by a subterraneous cut or tunnel to the foot of Stand Edge 
Hill, or Brunn Clough, where it again excavates ; and pursu- 
ing the bottom of a deep valley into Saddleworth, passes along 
the banks of the Tame to Ashton-under-Lyne, where it joins 
the canals that extend to Manchester, Stockport, Peak Fo- 
rest, &c. 
In the latter end of the year 1794, the miners employed by 
the canal company began to perforate the north-eastern foot 
at Pule Hill; the strata they first cut through consisted of a 
greyish coloured shale, the beds or laminae of which did not 
lie quite horizontal, but dipped or inclined a little to the 
westward. The strata continued regular till the workmen had 
