THE PAN-AMERICAN EXPOSITION. oll 
. Eastern oyster. Growing on twig of tree. In Florida some of the oysters, and 
in Porto Rico practically all of them, are found attached to the mangroves 
near the surface of the water. 
. Eastern oyster. Growing on palmetto pile. 
. Eastern oyster. Young. Growth or set on sheet of rubber, showing the density 
with which they sometimes attach themselves. The silver shells are 
‘jingles’? (Anomia glaora). 
. Eastern oyster. Growing on bark planted as cultch to furnish places of attach- 
ment. 
PACIFIC OYSTERS. ce 
. Pacific oyster. Growing on shells of Eastern oyster. The native oyster some- 
times kills the introduced species by this overgrowth. 
. Pacific oyster. Dense growth of young on shells of Eastern oysters. 
. Pacific oyster. Growing around edge of scallop shell. 
. Pacific oyster. Shoalwater Bay, Washington. These are regarded as the best 
oysters on the Pacific coast. 
. Pacific oyster. San Francisco Bay. 
. Pacific oyster. Port Townsend, Wash. 
. Rock oyster (Hinnites giganteus). California. 
EUROPEAN OYSTERS FROM CULTIVATED BeEps. 
. European oyster. Esperig, Norway. About four months old. 
. European oyster. Esperig, Norway. About two years old. 
. European oyster. Esperig, Norway. About three years old. 
EASTERN OYSTERS FROM PriINcIPAL BEeps or ATLANTIC AND Paciric Coasts. 
. Hyannis, Mass. 
. Providence River, Rhode Island. 
. Greenwich, Conn. Old oyster from planted beds. 
. Greenwich, Conn. Old oyster from planted beds. 
. Shinnecock Bay, Long Island. 
. Blue Point, Long Island. 
. Saddle Rock, Long Island. 
. Rockaway, Long Island. 
. Tangier Sound, Maryland. 
. Chincoteague, Va. Some of the valves show inclusions of mud between layers 
of the shell. 
. York River, Va. 
. James River, Va. 
. Lynnhaven Bay, Va. Large specimen, showing inclusion of mud between 
layers of shell near the tip. 
. Beautort, 8. C. Cluster of young on old raccoon oyster. 
. Beaufort, 8. C. Cluster of raccoon oysters from muddy tide floats. 
. Beaufort, 8. C. Single oysters separated from clusters when young, showing 
great improvement in shape over those exhibited as No. 15. 
. Charleston, 8. C. Planted oysters. 
. Troup Creek, Ga. 
. St. Georges Sound, Fla. 
. St. Andrews Bay, Fla. 
. Apalachicola Bay, Fla. 
. Silvias Bar, St. Georges Sound, Fla. Shows seaweed adherent to valves, char- 
acteristic of these beds. 
2. Mobile Bay, Ala. 
. Mobile Bay, Ala. Large specimen. 
. Bay Jump, La. The thick shells are characteristic of these beds. 
5. Jack Stout Bayou, La. 
. Cedar Bayou, Tex. ‘‘Texas saddlerocks.”’ 
. San Francisco Bay, Cal. Eastern oysters transplanted from Atlantic coast 
when small. 
. San Francisco Bay, Cal. Eastern oysters. The offspring of transplanted stock. 
. Yaquina Bay, Oreg. Eastern oysters transplanted from Atlantic coast when 
small, 
