Comstock] how to study A BROOK 339 



Note all the signs in the brook and about it that shows the 

 action of the water at flood. 



If there is a swamp formed by the brook explain why it should 

 occur at just this place. 



If the brook empties into a pond or lake how does it make the 

 waters of the latter look after a storm? Why? 



What becomes of the soil carried down by the brook in flood 

 time to the pond or lake? Do you know of any points of land 

 extending into a lake or pond where a stream enters it? This is a 

 stream delta, note how it was made. 



Estimate the number of feet between the height of the brook's 

 source and the level of pond or stream into which it empties. 



OUTLINE FOR STUDYING THE PLANT LIFE OF A BROOK 



What plants grow on the banks nearest the brook and -what 

 shrubs grow along its banks? 



Note how the roots of these plants and shrubs prevent the banks 

 from being washed out during floods. 



Note the ferns and mosses that grow along the brookside. 



What kind of vegetation is growing in the fields thru which the 

 brook passes? 



What kind of trees grow along the banks ? Note especially and 

 mark on the map all the trees that stand out alone near the brook. 

 Also note if such trees have helped to hold the banks or change the 

 course of the brook. 



Are there water- weeds growing in the pools? Is there any moss 

 or algae growing on the rocks and stones underneath the water? 



What plants do you find in the swampy places ? 



OUTLINE FOR STUDYING THE ANIMAL LIFE OF A BROOK 



Are there cray-fish in the stream ? Are they in still pools or in 

 swift water ? Note where they hide, how they walk and how the}^ 

 swim when frightened. 



Are there any fish in the brook ? Describe where each kind is found, 

 in pools or in swift currents? Do they appear singly or in schools? 



Are there caddis worms crawling on the bottom of pools? Of 

 what materials are their cases made ? 



Note the dragon-fly and May-fly nymphs at the bottom of pools. 



Are there any water-snails to be found? If so, on what are they 

 feeding? Are there any tadpoles? 



