196 THE MEDALS OF OREATION. Cuav. VI. 
The Purbeck-beds at Durlstone Bay, near Swanage, also 
contain numerous Gyrogonites associated with fresh-water — 
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4. 
Lien. 66. FossiIL FRESH-WATER PLANTS. 
Eocene, Paris. 
Fig. 1.—Seed-vessel of Chara helicteres x 10; side view. 
la.—View of the base of the same. 
16.—One of the spiral valves separated. 
lc.—View from above. 
2.—Seed-vessel of Chara medicaginula x 10. The uppet 
figure is a side view: the lower, a view of the base. 
3.—Carpolithes ovulum, magnified side view. 
3a.—The same, natural size. 
3b.—Magnified view of the base of the same. 
4.—A ‘piece of fresh-water limestone, with impressions 
of two stems of Nymphea arethusa x. 
shells. The bands of siliceous sinter, which occur in the 
lowermost deposits, are especially rich in these remains.* 
* Tam indebted to the Rev. Osmond Fisher, of Dorchester, for a fine 
suite of these and other interesting fossils from the Purbeck beds of 
Ridgway and Osmington, near Weymouth; and to William Shipp, 
Esq., of Blandford, and Edward Woodhouse, Esq., of Ansty, for — 
many specimens from Durlstone Bay, and Ridgway. j 
