204 



densis), the sycamore (Platanus occidentalis), the mulbeiTy, the hazel (Cory- 

 lus Americana), the hornbeam (Carpiuus Caroliniana), poison ivy (Rhus 

 toxicodendron), Virginia creeper (Ampelopsis quinquefolia), grape (Vitis), 

 greenbriar (Smilax), Indian Turnip (Arisaema Dracontium), ground ivy 

 (Nepeta Gleehoma), nettles, blue grass (Poa pratensis), meadow rue, straw- 

 berry (Fragaria), Impatiens, Aspidium thelypteris, Onoclea sensibilis and 

 Osmunda regalis. 



Looking forward to the future of this stream we expect greater erosion, 

 retrogression toward the xerophytic, and, as the ultimate base level is ap- 

 proached, progression again loward the mesophytic. 



