C ) 



S<)l<f A lafge and 'fine fpecimen of Mytilus Pliratu^, 5. a frefli water fhell, from 

 C/jt'na, each valve having a row of fix pearls, all furniflied with flalks, ex- 

 plaining an artifice made ufe of by the Chinefe, in affifting nature in the for- 

 mation of pearls, by faftening knobbed wires on the infidc of the Ihell, while 

 the animal was living, which was afterwards replaced in the river, or othej 

 place it was originally in, and in procefs of time, coated the wires over with 

 the pearly fubflance of its ilielh 



3911 A Clufter of Balanus Tulipa, Ellis, Fhilofeph'. Trans, fig. 10, partly over-rim b/ 



a Gorgonia pretiofa, very curious and rare, from Sicilip 



3912 A very large and fine Afterias Caput Medufs^ £^ from- Archangel, very ra-^e 

 5913' A'capital fpecimen of Folntalmpcrialis, S: or Great^horned Wild Mufic, from 



Luconia, extremely /iarce, — Martin ^ voL III. (^^\, QS^*-- 



CURIOUS ORES, CRYSTALS, &c. 



3914 A fine fpecimen of crylVallizcd Antimony, from Awvcrgne in France^ very 



rare 



3915 Part of a Brazilian pebble Cryftal, refleding ptifmatic colours, - wry beautiful 

 3916' A fine Marcalitical Copper Ore, richly coloured, -one fide poliflied, from 



rare 



3917 A Drufen of hollow pyramidal Quartz,' its cavernous property fuppofed to be 



owing to a decompofition of foine calcerous fubftance, . over which it had 

 formed, from Hungary 



3918 A rich fpecimen of Native gold, in Quartz, from P«-« 



3919 An elegant fpecimen af ftellated efRorefceace of Cobalt, of a beaittifui:piiik 



colour, from Afmelrerg, in Saxony, rare, inclofcd in a neat glafsoafe 



3920 A group of Quartz Cryftals, with Spicule of black Ihirl within, and a curious 



plated Iron Ore, with' Terra Pondcrofa, from Cornxvall, both rare 



3921 A moft beautiful and rich fpecimen of cryflallized lamellated Native Gold, with 



Lead Ore, Quartz, Cryllals, &c. from Boitza, in Tranfylvania, very rare 



3922 A very fine fpecimen of Plumofe White Vitrei of Tron,,^^^' farce, from 



Hungary 



Uncommon PETRIFACTIONS, SHE LL S,. MAD R E- 



PORES, &c. 



2923 The famous cryftallized Echinitcs of Mr. Baker, defcribed in the Philofophical 

 Tranfadions, No. 482. 



3924 A large and finelj' coloured fpecimen of Helix Undata, an undefcribed fpccies 



of Land Snail, from whence unknown. — Favanne, pi. 63, fg. G. 3. 



3925 A very large and fine fpecimen of a curious variety of Madrepora Muricata, LI 



inclefedin a glafscafe, with mahogany frame and back 



3926 A large and fine fpecimen of Foliita Nobills, S. an extremely rare, and very 

 beautiful ihell of the Wild Mufic kind, from China.— L 'fer, 799. 6. — Mar/in 

 111. 774. 



39'27 A 



