MINERALOGY AND GEOLOGY. 



Minerals, Select Specimens, the greatest Variety, price marked 

 on each. 



Collections, calculated for Learners, at various prices, from 

 Three Guineas to Twenty; classed and arranged according to the 

 New Descriptive Catalogue. 



Collections, more extensive, from Twenty to One or Two 

 Hundred Guineas. 



*^* Practical experiments will be shewn, and every informa- 

 tion given to assist the learner in his pursuits. 



Geological Collections, consisting of Specimens belonging 

 to the Primitive, Traiisiiion, Secondarj', Floetz Formations, &c. with 

 the Alluvium from the Gold Mines in Brazil, shewing the nature of 

 the soil in which Gold and Diamonds are found, from Two to Ten 

 Guineas. 



Geologicai Collections, from Frihurg, consisting of from 150 

 to 200 Specimens. 



Chemical Tests for ascertaining l\linerals. 



Elow-Pipes, OneSliilling each. Fragments for the Blow-Pipe or 

 Microscope, Agate IMortars, Steel do., Vlatiua Forceps and Spoons, 

 Magnets, Electrometers, Knives, Glass Tubes, Retorts, Hammers 

 of various sizes and forms: and whatever is requisite lo the Mineralo- 

 gist and Geologist. 



Fluor, Stroiitian, Barytes, Molybdena, Uranium, &c,c. for Chemi- 

 cal purposes. 



Lapidaries' Apparatus, complete, for cutting, slitting, and polish- 

 ing hard stones. With tools for polibhing soft substances, as Shells, 

 &c. 



Amateur Lapidary, or, a Practical Description of the use of the 

 Lapidaries' Apparatus, with coloured Frontispiece. 



Gentlemen abroad, desirous of exchanging Shells or Minerals, 

 Mr. M. will be happy to correspond with ihem, and receive con- 

 signments. 



SHELLS. 



As extensive variety of the finest specimens, price marked on 

 each. 



Collections of Shells for students, shewing the Genera, at 

 various prices, from Three Guineas lo Twenty, as the Specimens 

 are more or less Numerous and Select. 



Secondary Shells, a great variety, f:om One to Three Shillings 

 each. Inferior Shells for Grottoes. 



