MATTER & ITS PHYSICAL PROPERTIES. 



Divisibility, Unlimited Divisibility. Wollaaton's Micrometric Wire. Method of making it 

 Thickness of a Soap-Bubble. Wings of Insects. Gilding of Embroidery. Globules of the 

 Blood. Animalcules. Their minute Organization. Ultimate Atoms. Crystals. Porosity. Vol- 

 ume. Density. Quicksilver passing through Pores of Wood. Filtration. Porosity of Hydro- 

 phane. Compressibility. Elasticity. Dilatability. Heat. Contraction of Metal used to restore 

 the Perpendicular to Walls of a Building. Impenetrability of Air. Compressibility of iL Elas- 

 ticity of it. Liquids not absolutely Incompressible. Experiments. Elasticity of Fluids. Aeri- 

 form Fluids. Domestic Fire-Box. Evolution of Heat by compressed Air. Inertia, Matter in- 

 capable of spontaneous Change. Impediments to Motion. Motion of the Solar System. Law 

 of Nature Spontaneous Motion. Immateriality of the thinking and willing Principles. Lan- 

 guage used to express Inertia sometimes faulty. Familar Examples of Inertia. 



VOL,. H. 3 



