nelson] nature-study IN OUR CITY PARKS 211 



is seldom found in our region and the burning bush {Euonymus 

 atropurpurea Jacq . ) . Wild flowers are allowed to grow undisturbed 

 in the woods. Above the quarry there are many spring flowers, 

 Dutchman's breeches, dog- toothed violet, spring beauty, waterleaf , 

 and the blue and yellow violets. 



In the park there are two quarries (one being worked for stone 

 that is used in park drives) where a number of geological facts are 

 nicely illustrated. (See photo.) In the east, one there is a fault 

 extending across the floor and up one side. This is also found in 



Fig. 1. The West Quarry in Black Hawk Park 



the Spring on the river bank. A pothole in the limestone shows 

 that the river once ran (probably in Glacial Period) several 

 thousand feet east of its present course. A few fossils are to be 

 found in various layers. At one point on the west quarry the 

 stones show where the rock has been dissolved and then deposited 

 in crystalline masses. The Nature-Study Society made four trips 

 to Black Hawk Park in the fall and winter of 19 13-14 on account of 

 the excellent advantages for nature-study. One trip was on 

 geology, one on weeds (of which there is a fine collection), and two 

 on trees. 



Birds have been made much of in the large and the numerous 

 smaller parks of the city. One large feeding station has been 

 placed in each of the three larger parks (see photo) and an extra 

 smaller one in Black Hawk and Sinnissi])pi Parks. Suet, sunflower, 



