52 NATURE-STUDY 



A brook. The river. Ravine. Waterfall. Cave. Swamp. 

 Hill. Mountain. Bluff. Roadcut (stratification). Quarry 

 (strata, fossils). Mine. Spring. Artesian well. Weather- 

 ing and soil formation. Glacial drift. Glacial markings. 

 Collecting soils, sand, pebbles, rocks, minerals, fossils. School 

 excursion to some rugged and romantic spot. 



