Bull. U. S. F. C. 1891. European Methods of Oyster-culture. (To face page 406.) 
Plate LXXX. 
Fig. 1. Jerseke-dam, Holland. A Collecting Ground at low tide. 
The tiles have just been arranged in fringing rows. The boundary stakes may be noted. An outcropping corner 
of the dike forms the background at the right. Property of Baron Groeninx van Zoelen. (Page 384.) 
Fig. 2. Goes,, Holland. A Collecting Ground at low tide. 
The sides of the channel seen in the background are fringed with tiles. A corner of a tidal reservoir for storage is 
in the foreground. Property of Mr. Ochtmann. (Page 383.) 
