39 



Narcissus — 3 inches apart. 



Crocusses and Snowdrops— touching- one another, and from 3 to 4 

 inches deep. 



8. Winter Flowering Bulbs. Oriental Narcissus and Freesia. 

 Place Oriental Narcissus bulb in a large bowl, in the bottom of 



which are some stones ; fill with water and place the bowl in a warm, 

 light place. 



Place four or five freesia bulbs in a pot containing light soil; put 

 jn a warm, light place, and keep them moist. 



9. Make a Calendar of dates of planting the various vegetable seeds 

 when there is a succession of vegetables through the season. 



10. Make a diagram showing the succession of vegetables. 



11. What vegetables may be planted in fall? 



12. What planting of perennial flowering plants should be done in 

 the fall? 



LXVII. Rocks and Stones. 



1. In a Gravel Pit. 



(a) Assort the stones collected with respect to (1) shape, (2) ma- 

 terial composing them. 



[h] What kind of stone is most abundant? \A'hy are so many kinds 

 found together? 



(c) Are any of the stones like the rock found in the rocks under- 

 neath, or quarries, in the neighborhood? 



{d) Account for the presence of so many stones away from a 

 stream ; also for the sand layers. 



{e) What agent, or agents, has given shape to the stones? 



(/) What evidences that the stones have been placed in their present 

 position by water? Any evidences that water had nothing to do with it? 



(g) Note the direction of the gravel ridge. Do other gravel ridges 

 of district run in the same direction? 



{h) What evidence that the ridge has been formed for some time? 



(i) Compare the surface of stone with that of freshly broken stone. 

 Account for the difference. 



(/') Account for the coloring of some stones and beds. 



2. On the Surface of the Ground. 



(a) Visit a stone-pile in a field. Collect as many kinds as you can. 



(b) What proportion is rounded? What are the names of the kinds 

 of rocks collected ? 



(c) Compare the surface of exposed and freshly broken rocks. 



(d) What is the nature of the soil on which the rocks were found? 



(e) Account for the presence of such stones (boulders). 



