Beginning in 1834, an index of business activity by the Cleveland Trust Company provides data for comparison between recessions. Beginning in 1854, the National Bureau of Economic Research dates recession peaks and troughs to the month. However, a standardized index does not exist for the earliest recessions. In 1791, Congress chartered the First Bank of the United States to handle the country's financial needs.
n. pl. shellfish or shellÂ·fishÂ·es. 1. Any of various edible aquatic invertebrate animals having a shell, especially mollusks such as clams and oysters, and crustaceans such as lobsters, crabs, and shrimp. 2. An edible mollusk, in contrast to a crustacean: regulations concerning fish, crustaceans, and shellfish. 3. The edible flesh of such animals.
Crayfish also called Crawfish or Crawdad, are crustaceans in which most of them live in freshwater and a few live in brackish or salt water. Some live in burrows on land close to a source of water, all crayfish have the ability to borrow (Hyman 1996).