National Geographic : 1913 Mar
Photo from Dr. Hugh M. Smith OYSTERS GROWING ON A BOOT During the past 40 years immense quantities of Atlantic oysters have been transplanted to the Pacific coast, and a large business has sprung up which sur passes that in the natives.* It is neces sary, however, to renew the supply an nually, particularly in Oregon and Washington, where the water is of too low a temperature to permit the eggs of the transplanted oysters to develop. This difficulty may eventually be over come, and an oyster fully equal to that of the Atlantic be produced, by the ac climatization from the coast of Japan of a large oyster that is able to spawn in relatively cold water. Experiments to this end have been undertaken with promising results. In the warmer water of San Fran cisco Bay the conditions for oyster cul- ture are different, and there a very extensive and peculiar kind of oyster farming has sprung up. The grounds are surrounded by stockades, principally for the purpose of protecting the beds from the inroads of strong-jawed sting rays, which at times enter San Francisco Bay in schools, and would crush and de vour large quantities of marketable oys ters unless excluded by the stockades. Within the inclosures the planting, trans planting, growing, gathering, and culling are done under ideal conditions. A large oyster, similar to our Atlantic species, grows in great abundance in the Gulf of California. and is eaten in lim ited quantities in the adjacent parts of * See NATIONAL GEOGRAPHIC MAGAZINE, June, 1907, for a fuller account of the transplanting of Eastern oysters on the Western seaboard.