ECOLOGY — INTERPRETATION OF ENVIRONMENT 329 



rods. Cultivated and wild blackberries and dewberries occupy 

 the middle portion of the landscape, on the top of a sandy knoll. 

 Among other plants in view of the observer are the knotweed 

 or Polygonium, ragweed, wild lettuce, and grasses. A super- 

 ficial humus only, covers the surface of the sandy earth. 



The largest tree in the distance to the right is a maple, while 

 in the farther distance, willows appear; the remotest distance 



Landscape, showing the habitat of Orthoptera in the rear of 

 the author's grounds. See description in the text. 



showing a mixed forest of sycamore, tulip, oak, sassafras, 

 poplar, basswood, butternut, walnut, paw paw, hickory, and 

 flowering dogwood. To the left of the middle, young sassa- 

 fras trees are shown. 



As to the Orthoptera here, as I view the landscape in the 

 warmth of the sun, the varied-wing locust flies across my path. 

 The hotter the day, the oftener he indulges in his aerial flights, 

 which are sure to attract attention by the characteristic crack- 

 ling sound made by his wings. I will not go into further par- 

 ticulars regarding each species of grasshopper that I found here, 

 but will simply give the following enumeration of the common 

 species. These are suflBcient to show the general character 



