SCHOOL COURSES. 45 



III. WEATHER STUDIES as for the other seasons. Here 

 some of the comparative studies suggested at p. 33 

 might be carried out. 



IY. SUITABLE CALENDAR RECORDS, e.g. harvesting opera- 

 tions ; fall of leaf, giving trees in approximate order ; 

 migratory movements of birds, etc. 



V. PHYSICAL STUDIES, e.g. Equinoxes, Measurement of 

 the Sun's Altitude at September 22nd, Study of 

 the Moon's phases, Characteristics of the Harvest 

 Moon. 



VI. STAR STUDIES as in Winter Course. 



WINTER COURSE. 



From the nature of the work for this season it is not 

 convenient to set it out under separate heads of indoor 

 and outdoor. It will be seen that the logical continuity is 

 best maintained by following the lines adopted below. 



We pass naturally from the Fall of the Leaf (Autumn 

 Study) to a study of 



LEAF MOULD, in connection with which a demonstra- 

 tion on Processes of Decay should be given (see p. 277). 

 Devise experiments to show the action of Bacteria. Grow 

 moulds experimentally. Study Mushrooms and Toadstools 

 their mode of growth, structure, and their means of dis- 

 semination. Dry and char some toadstools. The residue 

 is mainly carbon. Enquire as to whence it comes and 

 what becomes of it. 



Note the formation in soil of Humic Acids, CO 2 , and 

 disappearance of carbon from the soil except as carbonate, 

 which remains longer. Incidental to the experimental 

 demonstration of the presence of Bacteria in the Air, give 

 a talk on the Hygiene of Fresh Air in relation to disease- 

 producing germs. 



From leaf mould we make the transition to SOIL con- 

 tents generally. Classify these. 



