CALDWELLj 



SUNDAY BOYS' OUTDOOR CLUB 133 



shallow water some 1,500 acres in extent, the present Wolf 

 Lake. Here boats were taken and we rowed a mile and a half 

 to where swamp plants on the shore and a forest are now rapidly 

 encroaching on the lake. The plants of lake and shore proved of 

 much interest. On this trip we also studied pond insects in a 

 small pond near the lake. Among the insects seen were dragon 

 flies, both larvae and adults, horse fly larvae, whirligig beetles, 

 giant water bugs, and backswimmers. 



SEVENTH TRIP — CHICAGO LAWN 



Far out on 63rd Street at Chicago Lawn is a prairie region 

 still uncultivated. Large bowlders here and there show that the 

 region has been glaciated and the character of the soil shows 

 that it has at one time been covered with water. The predom- 

 inating plant here is the prairie dock, rosin weed, or compass 

 plant. There were two species of these plants here in full 

 bloom. Two species of prairie clover, red and white, were also 

 in bloom. Other plants seen were blazing star, golden rod (2 

 species), asters, several species of sunflower, sweet clover and 

 milkweeds or butterfly weeds. 



EIGHTH TRIP — PINE, IND. 



South of the lake near Pine, Ind., is a series of ponds show- 

 ing all stages of extinction through the filling-up process of 

 plants, aided perhaps by erosis. These ponds are long lagoon- 

 like areas and run parallel to the lake. Some of them are so 

 nearly filled up that plants are now growing in the center of 

 them. Many of them show the zonal arrangement of plants, 

 as: the scrub zone, the bullrush zone, the water lily zone, the 

 zone of potaniogetona, and often a zone of free swimming 

 plants. On this trip we saw a solitary wasp, the Bembex, dig 

 its peculiar den and saw the flesh flies depositing their young on 

 the carcasses of dead fish that had been washed ashore. Water 

 lilies were in full bloom and several dozen were brought in by 

 the boys. 



NINTH TRIP— MILLERS, IND. 



Again we went to Millers, this time, however, for quite a 

 different purpose. We visited a tamarack or peat-bog swamp 

 south and west of Millers. All of us got our feet wet and were 

 badly mosquito bitten in the swamp. The water was a little 

 higher than usual and in many places we had to wade. Many of 

 the tamaracks had been blown over, showing the shallow root 

 system. We also studied a moving dune. Directly north of 

 Millers are excellent examples of live and moving dunes. One 



