Generate each of these gases and test for properties, as colour, odour, combustion, action with lime-water; the place occupied by these gases in nature. (See pp. 252-5.)
Practical Application of Heat, Steam, and Electricity:
Making a simple voltaic cell, an electro-magnet, and a simple electroscope. Test the current by means of the two latter and also with an electric bell. Explain the application of the above in the electric telegraph and motor. Simple demonstration of pressure of steam; history and uses of the steam-engine. (See pp. 259-60.)
SPRING
Injurious and beneficial Insects and Birds:
Identification of noxious insects and observations thereon; study of representatives of common families of birds, as thrushes, warblers, sparrows; economic values of birds. (See pp. 283-5 and 286-7.)
Aquatic Animals:
Observation exercises upon the habits, movements, and structures, including adaptive features of aquatic animals, as crayfish, mussel, tadpole, etc. (See pp. 285-6.)
Ornamental and experimental Garden Plots:
Experimental plots demonstrating the benefits of seed selection; ornamental plots of flowering perennials and bulbous plants; how to improve the school grounds and the home lawns. (See pp. 270-3 and 263-5.)