THE AMERICAN BOTANIST. 13 



furnished room between the spines. With the dogwoods it 

 was different, all species including the alternate-leaved, silky ^ 

 Bailey's, panicled, round-leaved, flowering, and red, were 

 used to some extent. 



There are no heaths native about Joliet. Of the thirty 

 odd shrubby species planted, only Clethra and Azalea niidi- 

 Uora were used by the cicadas. On the other hand, all the 

 ashes, red, white, blue, green, and black, were freely used 

 regardless of color or size. There was one slit on one catalpa, 

 but none on the buttonbush. The black elder was used, but 

 the red seemed to be free. On the other hand, the viburnums, 

 of which ten of the twelve species planted were large enough 

 to be used, were ripped up and down as though they had 

 been planted for that purpose. The snowberry, Indian cur- 

 rant, Sullivant's honeysuckle, and Diervilla, were used; the 

 honeysuckle family generally seemed to be well liked. 



It is interesting to bring together the list of trees and 

 shrubs, wholly exempt from these devastating marauders, to 

 see all together the species whose bark or sap or odor caused 

 the cicadas to avoid them. Leaving out the evergreens, which 

 one would hardly expect to be used, the list is as follows : 

 greenbrier, mulberry, papaw, spice brush, witch hazel, nine 

 bark, Spirea, shrubby cinquefoil. prairie rose, Amorpha fruti- 

 cosa, black locust, hispid locust, Ailanthus, sumac, hollies, 

 buckthorns, grapes, leather wood, heaths, catalpa, and but- 

 tonbrush. On the other hand, the kinds most used run in 

 families, and are: — hickories, willows, oaks, elms, currants 

 and gooseberries, fruit trees and bushes generally, most le- 

 guminous trees, prickly ash, maples, dogwoods, ashes, and 

 viburnums. 



Generally speaking the trees lost most of the growth of 

 1904, taking with it, of course, the growth of 1905. We are 

 thankful that there are seventeen years between visitations. 



Joliet, III. 



