CHAPTER II

Physical Science Phase of Nature Study 42

Instructions and General Method 42 Value of such lessons; conditions under which experiments should be performed 42 Correlations of physical science phase 44 List of Reference Books and Bulletins on garden and plant study, physical science, and animal study 45

Physical Science--Equipment for Forms III and IV 47 Desirable apparatus 47

Chemicals 48

Apparatus 50 Grenet cells; decomposition apparatus; pneumatic trough; spirit-lamp; barometer; hygrometer; hints 50

Time Apportioned to Nature Study 53