about eight in the morning
It works on wild animals , too -- that is , on Wolves and Foxes and maybe other things , '' then changing the subject Beaver continued : `` Can you tell the height of a tree by its shadow ? '' `` Never thought of that . How do you do it ? '' `` Wait till your own shadow is the same length as yourself -- that is , about eight in the morning or four in the afternoon -- then measure the tree 's shadow . That gives its length . '' `` You 'd have to wait all day to work that , and you ca n't do it at all in the woods or on a dull day , '' objected Blackhawk . `` I 'd rather do it by guess . ''