184 



THE GEOLOGIST. 



Pig. 9. The same, magnified, view of the opposite side. 



Pig. 10. The same, magnified, view of the side of the base. 



Fig. 10 a. The same, of natural size, view of the same side. 



Pig. 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. Be Koninck. PI. TV., 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 sculpturings engraved on 

 the test. The lase 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 groave is 

 more decided (Fig. i8). 



Affinities and Differences. — These have been already indicated in the 

 description of the preceding species. 



Position and Locality. — This species has been discovered by Mr. John 

 Gray in the Silurian limestone of Dudley. 



Explanation of figures. — PI. lY : — 



Fig. 12 — Specimen, magnified, view of the anal side. In the collection of Mr. 

 Gray, 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 PEACTICAL APPLICATION OF GEOLOGY m 

 COAL- SEEKING. 



By James Buckman, E.G.S., E.L.S., F.S.A. 



Professor of Natural History in the Royal Agricultural College of Cirencester. 



{Continued from page 134.) 



The 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 

 large estate was felled and sold. Tradition said that the coal had been 



