14 Robert Hardwicke, J 92, Piccadilly, w, 



Hydrostatics. 



Fully illustrated. Complete, 2d.; in cloth, 4d. Containing: — Aqueducts — 

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 Buoyancy of solids — Canals, navigable — Capillary attraction — Compression of 

 liquids — Density of liquids— Displacement — -Diving — Elasticity — Flotation — Hy- 

 drometers — Hydrostatic balance, bed, bellows, press, pressure — Human body, 

 specific gravity of — Levels, Survey — Liquids, compression of, elasticity of, lateral 

 pressure of, pressure of, properties of, weight of — Locks, canal — Machines for raising 

 water — Naval architecture — Press, hydrostatic — Pressure, hydrostatic, lateral — 

 Pumps — Rain — Rain-gauge — Screw, in ships — Ships, iron, notation of — Specific 

 gravity — Specific gravities, tables of — Spirit-level — Springs, artesian — Subterra- 

 neous lakes and reservoirs — Swimming, art of — Siphon, the — Water-camel, falls, 

 hammer, shed — Waterworks, ornamental — Weight of liquids— Wells — and other 

 useful information. 



Chemistry. 



Three Parts, 2d. each ; complete, Gd. ; cloth, 8d. An introduction to Chemistry, 

 including a popular summary of animal and vegetable physiology, accompanied 

 by various chemical tables, with numerous illustrations. Containing: — Acids — 

 Albumen — Alcohol — Alkaloids — Atomic theory — Attraction, chemical — Bases — 

 Binary compounds— Carbon— Chemical affinity — Clays — Classification of metals — 

 Colouring metals — Combustion — Divisibility of matter — Elective attraction — 

 Electro-chemistry — Elementary bodies — Elements — Fermentation — Fixed oils — 

 Forms of matter — Gaseous combinations — Hydrogen — Intermediate Elements — 

 Life — Matter— Nitrogen — Nomenclature— Oils and fat — Organization — Oxidation 

 — Oxygen — Primary compounds — Products of fermentation — Proximate elements 

 — Salts — Simple substances — Specific gravities, tables of — Spontaneous combus- 

 tion — Starch — Theory of the Ethers — Vegetable acids, &c. &c. — and other very 

 useful information. 144 closely but clearly printed pages. Fullv illustrated. 



Hydraulics. 



Fully Illustrated. Complete, 2d.; cloth, 4d. 



Optics. 



Fully Illustrated. Two parts, 2d. each ; complete, 4d. ; cloth, 6d. 



Other Works of a similar character are in preparation, and will 

 shortly he announced. 



INTENDED FOR SCHOOLS OR SELF-INSTRUCTION. 



Mackenzie's Educational Books. 



ALREADY PUBLISHED. 



Mackenzie's Tables. 



Commercial, Arithmetical, Miscellaneous, and Artificers'. Calculations in 

 Bricklaying, Carpentery, Lathing, Masonry, Paper-hanging, Paving, Planting, 

 Plastering, Slating, Tiling, Well-sinking, Digging, &c. &c. Fractions and 

 Decimals. Forms of Receipts and Bills. Calculations on Man, Steam, Rail- 

 ways, Power, Light, Wind, &c. Language and Alphabets. Calendar of the 

 Church. Scripture Money. Principal Foreign Moneys and Measures. Geo- 

 graphical and Astronomical Tables, &c. &c. Complete, price 2d. 



Murray's English Grammar. 



Complete, word for word with the Shilling Editions. Price 2d. 



