70 Advertisements. 



MISCELLANEOUS APPARATUS. 



Working Models of Steam Engines, Sectional Models and 

 Diagrams of ditto. 



Globes, Orreries, Planetariums. 



Trochiameters, for determining Distances by registering the Revo- 

 lutions of a Carriage Wheel. 



Complete Sets of Apparatus for the Analysis of Soils and Manures. 



Mineralogical and Geological Cabinets, containing selected 

 Specimens. 



MODELS OF MACHINERY MADE TO DRAWITVTGS. 



Laboratories fitted up complete, with every Requisite. 

 Philosophical Instruments of every description Cleaned and Repaired. 



MERCHANTS, SCHOOLMASTERS, LECTURERS, AND THE TRADE 

 SUPPLIED ON LIBERAL TERMS. 



LIGHTNING CONDUCTORS FIXED ON THE MOST IMPROVED 



PRINCIPLES, TO CHURCHES, MANSIONS, AND OTHER 



BUILDINGS. 



Old Conductors carefully examined and repaired. 



Country and Foreign Orders, enclosing a Remittance or Order for 

 Payment in London, promptly attended to. 



