XX INTRODUCTION. 



KINEMATICS, STATICS, AND DYNAMICS. 



Elementary Illustrations, Position and displacement of a point, a rigid body 

 or a material system. Composition and resolution of displacements. Velocity 

 and acceleration, their composition and resolution. Displacements of a con- 

 nected system. Principles of mechanism. Rolling contact, sliding contact, 

 belting, link connections, shafting, universal joints, &c. Transmission of work. 

 Relation between the displacement of two pieces of a machine and the forces 

 which they transmit. The mechanical powers. Instruments for illustrating 

 the laws of motion, such as pendulums, gyroscopes, dynamical tops. 



Laws of fluid pressure ; stability of floating bodies. 



Discharge of fluids through orifices, and their motion in channels. 



Hydraulic and pneumatic transmission of power. 



MOLECULAR PHYSICS. 



Instruments and apparatus employed in teaching, and in the investigations 

 and observations connected with : 



Pressure on Matter. Tension, compression (piezometer), torsion, flexion ; 

 relation of volume to pressure ; elasticity of liquids and gases. Hardness (of 

 solids and liquids), toughness, brittleness, malleability, &c. 



Communication of Pressure through Fluids. Pressure of air, its conse- 

 quences and applications. Barometers, air-pumps, siphons, suction-pumps, 

 spirators, &c. ; Pressure of water, its consequences and applications. Levels, 

 side pressure, &c. 



Density. Methods of measuring densities of gases, vapours, liquids, solids. 



Adhesion and Cohesion. Condensation of gases in solids, solution of gases 

 in liquids, mixing of gases with gases (diffusion, transpiration, &c.), absorption 

 of liquids by solids (capillarity, &c.), absorption of liquids by gases (evapora- 

 tion, &c.), mixing of liquids with liquids (Osmose, Diffusion Dialysis). Evapo- 

 ration of solids, solution of solids, mixture of solids with solids (cementa- 

 tion, &c.). 



SOUND. 



Instruments and apparatus employed in teaching, and in the investigations 

 and observations connected with : 



Geometrical, Mechanical, and Optical methods of Illustrating the Laws 

 of Wave-Motion. Progressive waves, composition of vibrations, interference, 

 stationary waves. 



Generation of Sound. Fog-horn, &c. 



Conduction of Sound. Through solids, liquids, and gases, stethoscopes. 



Velocity of Sound. 



Detection of Sound. Sensitive flame, &c. 



Reflection and Refraction. Ear trumpets, acoustic lenses, &c. 



Dispersion and Absorption. 



Musical Sounds. Pitch, standards of pitch, standard tuning forks, &c. ; 

 methods of measuring and comparing rates of vibration ; toothed wheels, 



