I4' AGRICULTURAL SURVEY - Yds. Fts Ins, Béought ever"251 20 Grey metal and girdles- OO White poſt-- OO 14, CoAaL>- TO 2 Blue and grey metal- O 15, COAL--© 0.9 Blue and grey metal- 40 O White poſt mixed wilwin«=«1.16 Grey metal-- 2-6 Grey metal and girdles- 2.00 16, Low MAaiNUo4L- 2 OG Total 270 IS

In the above pit or ſhaft, which is nearly® the deepeſt in the kingdom, there are no leſs than 16 ſeams of coal, Baut many of theſe, from their thinneſs, are not workable. The gth, called the high main coal, and the toth, the /cæ main coal, are the two principal ſeams for affording quan- tities of coal, being together 127 feet thick, and are thoſe moſt generally wrought. But the Ioth, 13th, and 14th, are all workable ſeams, and will afford conſiderable quan=- tities of coal; the aggregate of the three making nearly 91 feet thick; ſo that the total thickneſs of the workable ſeams in this colliery amount to 22 feet

In Montague Main Colliery(3 miles weſt of Newcaſtle) ſouth of the main dyke, the frata are:—

Yds. Ft. Ins.

Soil and clay-- 5100 White poſt-- O20 COA(D)-- OS Black: metal ſtone-- TO 2 Grey poſt-- 220 Carried over JO IO

* A pit has lately been ſuak at Willington, 5 miſes narth- eaſt

from Newcaſtle, which is 280 yards deep, te the low E ¡ue