A GRADED COURSE OF NATURE-STUDY 453 



In general, the work is largely correlated with geography 

 and manual training, and still largely used as the basis for 

 other studies. Study selected types to represent large classes. 

 Study groups to show interrelations. Classify animals and 

 plants, to show their relationships. Do not neglect the 

 aesthetic and altruistic side of nature-study. 



Suggestions for correlated art study see page 57. The asterisk indicates 

 subjects for drawing, painting, etc. Numbers indicate general reference 

 list, p. 521. 



THROUGHOUT THE YEAR 



EARTH-STUDY: Review minerals studied last year. Add 

 to mineral collection and study metal ores, metals, salts, 

 etc. (343, 263, etc.) 



Intensive study of coal and iron. Localities, under what 

 conditions, mining methods, reduction of iron (simple) ; uses 

 of coal and iron in industries. (For coal 348, 339, 263, 

 320, geographies. For iron 339, 263, 320, 322, 317.) 



Experiment with plaster of Paris, mortar and cement, 

 and artificial stone to give some idea of rock formation, and 

 also to understand something of these things themselves. 

 (263, etc., 317, 318.) 



Rock formation: Visit brook or river for sand or mud 

 deposits. Note the stratification, the imbedded leaves, 

 sticks, shells, footprints of birds, etc. Suppose this were to 

 harden. Visit a quarry or rock cliff. Notice layers and 

 finer stratification, and fossils.* Connect with experiments 

 on artificial stone and the deposits in the brook. (327, 336, 



3 2 4, 339-) 



Coral:* Brief study of the polyp, especially its limy skel- 

 eton. Observe specimens of coral. (33, 34, etc.) Test 

 with muriatic acid. 



