CHALCEDONY. 
161 
614 and 615. CAPrED QuAPtTz, 
the two specimens fitting each 
other. 
Cornwall. 
616. Doubly-capped QuaPiTz. 
Saxony. 
Presented by 'SV. T. Blanford. 
617. Floating Quartz, a highly 
celliilar variety. 
France. 
618. Quartz, encrusting cubes 
of Fluor Spar. 
From the Lead Mines of Aldstone 
Moor, Cumberland. 
619. Quartz, with pseudomor™ 
phous cubic impressions, having 
invested crystals of Fluor Spar, 
which have since been removed. 
Aldstone, Ciimberkaid. 
620. Quartz, in octohedral 
crystals, pseudomorphous after 
Fluor Spar. 
From the Lead Vein of Huel Mary 
Ann, Cornwall. 
! 621. Quartz, in pseudomor- 
^ phous octohedrons. 
Cornwall. 
622. Quartz, wdth pseudomor¬ 
phous impressions. 
I Festormel Royal Iron Mine, Lost- 
j unthiel, Cornwall. 
623. Quartz, -with pseudomor- 
j ifiious impressions of scalenohe- 
drons of Calcite. 
Restorrnel Royal Iron Mine. 
624. Quartz, as an investment 
psendomorph after lenticular crys¬ 
tals of Carbonate of Iron. 
CooRs Kitchen Mine, Cornwall. 
625. Pseudomorphous Quartz. 
Venezuela. 
626 . Honeycomb Quartz, the 
! cell partitions left by the decom¬ 
position of carbonate of lime and 
iron. 
Aldstone, Cumberland. 
Case K. 
Quartz— cont. 
Chalcedony 
627. Chalcedony, stalactitic. 
Grancott, Iceland. 
628 to 630. Chalcedony, show¬ 
ing its mode of occurrence. 
From the Greensand, Lyme Reyis, 
Dorsetshire. 
631. Chalcedony. 
R ear King's Langley, Herts. 
Presented by H, C, White. 
632 and 633. Chalcedony, sta¬ 
lactitic. 
■ Trevascus Mine, Cormvall. 
(The large specimen, No. 633, is placed 
underneath.) 
634. Chalcedony, stalactitic 
and investing Quartz Crystals. 
Trevascus Mine, Coimwall. 
635. Chalcedony, dotted with 
small crystals of purple Fluor 
Spar. 
Aden. 
Presented by the late Dr. Euist. 
636. “ Bubble Chalcedony,” 
on Bitumen. 
Auvergne, France. 
AND Jasper. 
637. Chalcedony, coating 
rhombohedral crystals of Carbo¬ 
nate of Iron. 
Hiittenberg, Carinthia. 
638 and 639. Chalcedony. 
Mantchouria. 
640. Mouth-piece of a Pipe, 
turned out of the piece of Chal¬ 
cedony, No. 639. Chinese manu¬ 
facture. 
Nos. 638 to 640 presented by Dr. Lock¬ 
hart. 
641. Snuff Box of Chalce¬ 
dony, with bead pattern produced 
artificially. 
642. Chalcedony, showing the 
bead pattern, similar to No. 641, 
artificially produced. 
Nos. 641 and 642 presented by Col. 
Guthrie. 
643. Cast of an Echinoderm 
{Ananchyfes ovatus), in Chal¬ 
cedony. 
From the Upper Chalk, 
L 
