56 ILLINOIS ACADEMY OF SCIENCE 



of large areas in Illinois oak grove savanna/ See 

 Bryant's poem "The Prairies." The fanna of the for- 

 est edge is especially characteristic; in the forest, rac- 

 coons, gray squirrels, and many characteristic inverte- 

 brates. Stream badly polluted. 630-650 ft.; level (See 

 Figs. 10 to 13). 



Chicago^ 12 miles west, C. B. & Q. R. R. or La Grange 

 Electric; Yz mi. N. W. from (w) Riverside, 111. John Doe. 



Name each preserve according to a locally knoA^^l point, 

 as a \dllage, river, mountain or the like, and the natural 

 ecological features. 



The model would be preceded by a general description 

 of the Cook County Forest Preserves. Describe general 

 areas first; for example a National Forest, and follow 

 it by the descriptions of important natural areas within 

 it accompanied by the phrase e.g." in the Teton National 

 Forest". 



The first name of a town or city following the descrip- 

 tion is the nearest station at which through trains stop, 

 the nearest town with good hotel accommodations, or the 

 like; Avhere practicable the town should be large enough 

 to be on available small scale maps and serve as a catch 

 word for location. It is followed by the distance and di- 

 rection to the locality's nearest postoffice with name of 

 transportation routes available; after this follows the 

 distance and direction from the nearest postoffice which 

 is given last folloAvcd by the state or province, and finally 

 the name of the person describing the area. 



Letters in parentheses preceding the name of the near- 

 est post office indicate desirable means of reaching the 

 area as follows: (av) on foot; (a) by automobile; (h) 

 horse l)ack. 



The following types of conditions have been recognized. 

 The first twenty with the possible exception of the S. E. 

 conifer forest are believed to be dependent upon climate. 

 The last four or five are known as local or edaphic or mi- 

 croclimatic conditions. 



' Refers to numbered paragraphs describing large communities which 

 appear in the main to be dependent upon climate. 

 5 Hotel or boarding house facilities. 



