58 The Wilson Bulletin — Xo. GT. 



Laboratory. The foundation for the hst is a card catalogue 

 which has been kindly furnished me by Professor Herbert 

 Osborn, the director of the Lake Laboratory, compiled by 

 himse.lf and by those who have taught with him there during 

 the existence of the Laboratory. 



There have been two notable papers relating to the Cedar 

 Point region proper, to which the reader who wishes to learn 

 particulars which cannot be given within the limits of this 

 paper is referred. One is the "Formation of Sandusky Bay 

 and Cedar Point" (here meaning the whole sand spit) by 

 Professor E. L. Alosely, in the Thirteenth Annual Report of 

 the Proceedings of the Ohio State Academy of Science, 190L 

 From this paper it is made clear that when the lake was at a 

 much lower level than it is at presejit there was no bay, the 

 Sandusky river l^owing into the lake through a narrow channel 

 somewhere lakeward between Marblehead and Cedar Point, 

 and therefore there was no peninsula as now. Cedar Point 

 must have been a ridge of clay, probably underlaid by shale, 

 and the present bay was a depression, but not even a marsh, 

 lying between the higher land now represented by the main- 

 land and this ridge. The changes, or most of them, which 

 have produced the bay and marshes and sand spit have oc- 

 curred in historic times, being the result of a tilting of the 

 land at the eastern end and consequent deepening of the lake 

 at its western end. 



The other paper is "An Ecological Classification of the 

 Vegetation of Cedar Point" (again meaning the whole of the 

 sand spit) by Otto E. Jennings, published in The Ohio 

 Naturalist, Vol. VTII, No. 6, April, 1908, pp. 291-340. To 

 this paper I am indebted for most of the pictures which will 

 accompany this series of articles. The reader who is especial- 

 ly interested in the study of Ecology should not fail to read 

 this exhaustive paper. Tt is sufficient here to say that border- 

 ing- the sand s])it on the one side are the waters of the lake 

 and on the other, the open waters of the bay, while at its 

 eastern end, for rather more than half of the distance, are the 

 extensive marshes ^^ ith greater or lesser areas of open water. 



