PALM0ZOIC ROCKS BENEATH NORTHAMPTON. 485 
mitic rock, and rested upon an eroded surface of this Carboniferous 
dolomite 25 feet in thickness. 
This rock yielded one perfect fossil (Orthoceras oblatum) and a 
few annelid-tracks, and was succeeded by Carboniferous Limestone 
crowded with characteristic fossils and containing bands of sand- 
stone, passing at 844 feet into yellow shales containing plant- 
remains and numerous fossils, in which, at a depth of 351 feet, the 
boring was discontinued. 
The Carboniferous strata were as follows :— 
Hig acy tiny, wien 
No. of bed. 805 6 
15. Red dolomite, fissured, with eroded surface, fissures 
filled with impure calcareous deposit ............ 2 0 
iis Vieimoniwitite dolomite: ceic teins es tedoabeeeran sleds ee’ 10 
17. Dull red dolomite, jointed and very dense, contain- 
ing a vein of quartzite towards the base, also 
Orthoceras oblatwm and annelid-markings ...... 22 0 830 6 
18. Yellow sandstone containing Lithostrotion junceum, 
Lithostrotion irregulare, and Lonsdaleia flori- 
JOTEIDS: occ Rae RASE Ge COAECOLE OOO TOT ER ORE er ene 2 6 
19. Vein of rec sandstone, fossils more numerous ...... 1 O 
20. Yellow sandstone, similar fossils to those in beds 
1261 GHEE TD) aa a Ailes te chiar att en A ee 2 0 836 0 
21. Dense orange-coloured limestone with cale-spar... O 6 
22. Yellow limestone, fossils numerous: Chetetes, Cys- 
tiphyllum, sp., Lithostrotion irregulare ...........- 7 6 844 0 
23. Yellow sandy shales with plant-remains ............ LG) 
2a, band of black sandy shale Kc. .........2.2.seccecsoees 0 6 
25. Yellow shales centaining Orthoceras, Productus 
scabriculus, Streptorhynchus crenistria, scales of 
PCG OIL CETONUS. caja suiraain nee once cet ooo Ree eee 5 6 
otal. aaa 45 6 851 O 
Saline water was met with in this boring, coming, without doubt, 
from the beds above the dolomite. The yield, however, was only 
about 200,000 gallons per day. The water had a specific gravity 
of 1:013, and contained 1200 grains of mineral salts per gallon. 
a water appeared to have a level of about 150 feet aboye Ordnance 
atum. 
III. Tz Gayron Bormne (fig. 1, p. 496). 
The second trial took place near the village of Gayton, five miles 
south-west of Northampton, not far from the Banbury-Lane crossing 
of the L. & N.W. Railway Co., about two miles north-west of Blis- 
worth Station (see Ordnance map 52, 8.W.). It was thought that 
under the known attenuation of the Trias westward, the Water- 
stones could be found, if only the site selected was at a sufficient dis- 
tance beyond the Carboniferous rocks to have allowed the lower beds 
of the Triassic series to be deposited near Northampton. 
This boring, 282 feet above sea-level, was commenced at the 
