An ecological survey in northern An ecological survey in northern Michigan ecologicalsurvey00adam Year: 1906 Fia. 15. Large rock ledge on the face of the chff shown in Figure 14, illustrating the character of the vegetation on a cliff that is broken by ledges. Fig 16. Talus slope, station III. 5,'showing the nature of the talus. The influence of the unstable character of the slope upon the vegetation is indicated by the fallen pines.

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