MINERALOGY AND GEOLOGY. 
MrneERALs, Select Specimens, the greatest Variety, price marked 
on each. 
Cottections, calculated for Learners, at various prices, from 
Three Guineas to Twenty; classed and arranged according to the 
New Descriptive Catalogue. 
CoLuecTions, 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. 
Gro.ocricaL CoLtecrions, censisting 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. 
Grotrocicat Cotzecrions, from Friburg, consisting of from 150 
to 200 Specimens. 
Curmicat Tesrs for ascertaining Minerals. 
Blow-Pipes, OneShilling each. Fragments for the Blow-Pipe or 
Microscope, Agate Mortars, Steel do., Platina Forceps and Spoons, 
Magnets, 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, &c. for Chemi- 
ca] purposes. 
Lapidaries’ Apparatus, complete, for cutting, slitting, and palish- 
ing hard stones. With toels fer polishing soft substances, asSuELLs, 
&e. 
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 theny, and receive con- 
signments. 
SHELLS. 
Aw extensive variety of the finest speeimens, price marked on 
each. 
Cottecrions of Suetts 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 Shillings 
each, Inferior Shells for Grottoes. 
