184 
THE GEOLOGIST. 
Fig. '.). — The same, magnified, view of the opposite side. 
Fig. 10. — The same, magnified, view of tiie side of the base. 
Fig. 10a. — The same, of natural size, view of the same side. 
Fig. 11. — The same, magnified, view of the opposite side. The letter Z indicates 
the anal side and the groove for the alimentary canal of the animal. 
2. Pisocrinus ornatus. J)e Koninck. PI. IV., fig. 12, 13. 
The Calix of this species presents the form of a little truncated cone. The surfaces 
of the various plates are ornamented with small irregular sculptu rings engraved on 
the test. The hase offers the aspect of a little cup with edges furnished with three 
angles, less acute than in the preceding species ; its edges are also more raised. The 
sub-radial plate is rather longer than broad ; its upper angle is acute, and is pro- 
longed to the edge of the calix. The small radial plates are of a well-marked 
triangular form. Their articular surface, destined to receive the second radial 
plate, is less deeply furrowed than that of the preceding species, but the test of this is 
thicker. The opening of the calix is pentagonal ; on the anal side the groove is 
more decided (Fig. xa). 
Affinities and Differences. — These have been already indicated in the 
description of the preceding species. 
Position and Localitij. — This species has been discovered by Mr. John 
Gray in the Silurian limestone of Dudley. 
Explanation of figures. — PI. IV : — 
Fig. 12 — Specimen, magnified, view of the anal side. In the collection of Mr. 
(iray, of Hagley. 
Fig. 12 a. — The same, of the natural size, seen from the same side. 
Fig. 13. — The same, magnified, seen from above. 
THE PKACTICAL APPLICATION OF GEOLOGY IN 
COAL- SEEKING. 
By James Buckman, F.G.S., F.L.S., F.S.A. 
Professor of Natural History in the Royal Agricultural College of Cirencester. 
(Cmxtinmd from page 1.34.) 
Tee case now to be detailed is one which was investigated at 
Malmsbury, in Wiltshire. At this place the worthy burgesses to 
whom the land had been bequeathed by king Athelstan had undoubted 
evidence that a shaft had been sunk for coal on the land in question. 
This operation was actually performed about a century ago, and, in 
order to pay the attendant expenses, the whole of the timber from a 
largo estate was felled and sold. Tradition said that " the conlhad been 
