48 IOWA ACADEMY OF SCIENCES. 



from a considerable observation, that even these selected and isolated 

 specimens represent very closely the characteristics of the species." 



By way of comparison I have added a table showing the appearances of 

 some flowers in Ames, Iowa; Madison, Wisconsin; Lansing, Michigan, and 

 Vienna, Austria. I have had to choose woody species as they were the 

 only ones recorded for Lansing, New York, and Madison. It is to be re- 

 gretted that these comparisons could not be obtained for the localities of the 

 same year. Those of Vienna, however, represent the mean of ten years. 

 Nothing is said about the lateness or earliness of the season in New York or 

 Lansing. The season of 1893 for Ames was somewhat backward, and the 

 spring of 1884 for Madison was normal, I think. In preparing these notes the 

 writer is under obligations to several of the students of the College, but 

 especially to Geo. W. Carver and F. C. Stewart. Many of the notes were 

 made by myself at odd times. The length of branches is given; in some 

 cases the greatest length is recorded, in others the average. A = average; 

 T = terminal; L = lateral branches; Sh = long shoot; F = falling of leaves; 

 O = early appearance of leaves. 



