MINERALOGY AND GEOLOGY. 



Minerals, Select Specimens, the greatest Variety, price marlced 

 on each. 



Collections, calculated for Learners, at various prices, from 

 Three Guineas to Twenty; classed and arranged according to the 

 Now 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, Transition, Secondary', 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. 



Geological Collections, from Frihurg, consisting of from 150 

 to 200 Specimens. 



Chemical Tests for ascertaining Rlinerals. 



Blow-Pipes, OneShilling each. Fragments for the Blow-Pipe or 

 Microscope, Agate Mortars, Steel do., Flatina Forceps and Spoons, 

 IMagnets, Electrometers, Knives, Glass Tubes, Retorts, Hammers 

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

 gist and Geologist. 



Fluor, Strontian, Barytes, Molybdena, Uranium, ficc. for Qherai- 

 cal purposes. 



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

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



&CC. 



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 thenj, and receive coii- 

 sionmenls. 



SHELLS. 



An extensive variety of the finest specimens, price marked on 

 each. 



Collections of Shells for students, shewing the Genera, at 

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

 are more or less Numerous and Select. 



Secondary Shells, a great variety, from One to Three Sliillings 

 each. Inferior Shells for Grottoes. 



