MINERALS. 



Life history of a pebble part of cliff or rock; acted upon by air, 

 water and frost. Compare sandstone, granite and limestone pebbles 

 as to color, form, smoothness, hardness, etc. 



ELEMENTARY GEOGRAPHY. 



Compare rainfall with October and September. Forms of clouds 

 most common high or low. Relation of temperature to cloudiness 

 and rain; relation of cloudiness to rainfall. 



Compare variation of shadow of October, September, and Novem- 

 ber. When greatest? When least? 



NOTE. No work can be more conducive to the cultivation of the imagination 

 than to trace the history of a pebble. Moral lesson: contact with different con- 

 ditions in wearing off the rough edges. Difference in color and texture show 

 different origin; bands and faults show varied experience in life history. Phy 

 sical forces acting. 



DECEMBER. 



PLANTS. 



Examination of horse-chestnut, maple and fruit trees. Compare 

 growth, bark, scars, number of arrangement and covering of buds 

 formed. Probable fate of buds. 



ANIMALS. 



Distinguish between vertebrated animals; mammals, birds, fishes, 

 reptiles, amphibians. 



MINERALS. 



Action of acids upon sandstone, limestone, marble, granite, mica, 

 quartz, coral, shell. Relate to formation of caves chemical forces 

 acting. 



ELEMENTARY GEOGRAPHY. 



Influence of storm upon barometer. Effect upon temperature. 

 Winter Solstice. Compare shadow of September 21 and Decem- 

 ber 21. 



NOTE. Place small piece of rock in test-tube and note effect of dilute sulphu- 

 ric or hydrochloric acid upon it. Result. Note which one dissolves most readily. 

 Beds of rock best adapted to formation of acids. Effect of water, holding acid '.n 

 solution, upon lime rock. Why was it possible for Mammoth Cave to have been 

 formed where it is? Why is the Blue Grass region so fertile? 



Compare physical and chemical forces acting. 



