? .. ,. AGRICULTURE. 



■ { r 



c ( ^ < 



'J c ' , 



t c e c t < 



(7) Ice. 



(8) Snowslides. 



(9) Glaciers. 

 (lo) Icebergs. 



3. Field Exercise No. i. 



III. Organic Life. 



1. P la tit Life. 



(i) Mechanical or Physical Effects 



(2) Chemical Effects. 



(3) Vegetable Accumulations. 



2. Anitnal Life. 



(i) Disintegration. 



(2) Animal Accumulations. 



Calcareous Deposits. 



Siliceous Deposits. 



Phosphatic Deposits. 



3. Environmetital Changes. 



4. Field Exercise No. 2. 



