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Hills, are Crops of Coal and Limeftone; and often- 
times the Tenants fpit up as much as will ferve their 
Turn for a Winter’s burning, juft under the Surface j 
for there wants a Market, and it is fcarce worth 
working for Sale. And to the North- Weft and 
North, in the Drift of the Coal in higher Ground, 
and, confequently, lying over it, there appear, in 
the Sides of the Hills, Seams of Spar and Lead, the 
Drift of whch is North- Eaft, and lies almoft perpen- 
dicular } but what Obliquity there is, pitches to the 
South-Eaft. At Aucbenclaugh , fix Miles Eaft from 
Kylftth , there is a Coal eighteen Feet thick } this dips 
one Foot in three, and is not purfued by reafon of 
W ater ^ and, for want of a Market, will not quit the 
Coft of draining. At Made ft one, the Coal is four 
Feet and a half thick, above three Fathom and a half 
deep : They land it (as at many Coalhews in the 
Country) on Girls Backs. Near Tranent are three diffe- 
rent Veins wrought ; the undermoft is about eighteen 
Fathom from the Surface, call’d the S plenty Coal , four 
Feet and a half thick j it's a hard but not large Goal - 
makes a clear and ftrong Fire-, lies ten Fathom under 
the main Coal , which is nine or ten Feet thick, and 
comes out very large. Its Roof is of Freeftone, under 
which I walked backward and forward two Hours * 
but had no Opportunity to make any other Obfer- 
vations on the upper Vein, than that it is about four 
Feet thick, and neither fo hard or large as the other. 
As I have, Fig. i. and 2. drawn the different Strata 
(which have come to my Obfervation) on a fuppofed 
Plane, as they there lie ; in Fig. 3. and 4. 1 protrad the 
fame in a globular Projedion, fuppofing the Mafs of 
the Terraqueous Globe to confift of the foregoing, or, 
perhaps, of ten thoufand other different Minerals, all 
originally, whilft in a foft and fluid State, tending 
K k k 2 towards 
