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Hollister can refer to:. See also Ivory carving.. Hollister Ranch Realty, Hollister Ranch sales. So-called hornbill ivory, derived from a bird, is not true ivory but resembles it in some ways. Hollister Incorporated, a medical device company. . Hollister Ranch, a ranch north of Santa Barbara, California, USA. It is sometimes called vegetable ivory, or tagua, and is the seed endosperm of the ivory nut palm commonly found in coastal rainforests of Ecuador and Peru.
Hollister Co., a clothing company. A species of hard nut is gaining popularity as a replacement for ivory, although its size limits its usability. Hollister, California, a place in the United States. Mammoth ivory is used today to make handcrafted knives and similar implements. Trade in the ivory from the tusks of dead mammoths has occurred for 300 years and continues to be legal. Kenya, which saw its elephant populations plummet in the decade preceding the 1989 ban, claims that legalizing ivory trade anywhere in Africa will endanger elephants everywhere in Africa as poachers would attempt to launder their illegal ivory with legal stockpiles.
Yet, a 1999 study done by Oxford University found that less than one percent of the five-hundred million US dollars ivory sales generate ever reach Africans; most of it goes to middlemen and vendors, so the effectiveness of the policy is in question. In 2002 the United Nations partially lifted the ban on ivory trade, allowing a few countries to export certain amounts of ivory. Many African countries including Zimbabwe and South Africa claim that ivory trade is necessary—both to stimulate their economies and reduce elephant populations which are allegedly harming the environment. Since the worldwide ivory trade ban in 1989 there have been ups and downs in elephant populations, and ivory trade as bans have been placed and lifted.
Much of the decline in population is due to poachers during and before the 1980s. Due to the rapid decline in the populations of the animals that produce it, the importation and sale of ivory in many countries is banned or severely restricted. Additionally, warthog tusks, and teeth from sperm whales, orcas and hippos can also be scrimshawed or superficially carved, thus retaining their morphologically recognizable shapes. A small example of modern carved ivory objects are small statuary, netsukes, jewelry, flatware handles, furniture inlays, and piano keys.
Tooth and tusk ivory can be carved into an almost infinite variety of shapes and objects. The North African elephant population was probably reduced to extinction, due to the demand for ivory in the Classical world. Ivory was often used to form the whites of the eyes of statues. Both the Greek and Roman civilizations used large quantities of ivory to make high value works of art, precious religious objects, and decorative boxes for costly objects.
Paleolithic Cro-Magnon man, during the late stages of the ice age, were the first to carve in ivory (mammoth tusks). The three dimensional configuration of the dentinal tubules is under genetic control and is therefore a characteristic unique to the order. Their length is dictated by the radius of the tusk. These canals have different configurations in different ivories and their diameter ranges between 0.8 and 2.2 micrometres.
Dentine contains a microscopic structure called dentinal tubules which are micro-canals that radiate outward through the dentine from the pulp cavity to the exterior cementum border. The inorganic component of dentine consists of dahllite. Dentine is a mineralized connective tissue with an organic matrix of collagenous proteins. Dentine, which is the main component of carved ivory objects, forms a layer of consistent thickness around the pulp cavity and comprises the bulk of the tooth and tusk.
Odontoblasts line the pulp cavity and are responsible for the production of dentine. The pulp cavity is an empty space within the tooth that conforms to the shape of the pulp. The innermost area is the pulp cavity. Teeth and tusks have the same physical structures: pulp cavity, dentine, cementum and enamel.
The teeth of most mammals consists of a root and the tusk proper. Tusks, which are extremely large teeth projecting beyond the lips, have evolved from teeth and give certain species an evolutionary advantage. Teeth are specialized structures adapted for food mastication. Teeth and tusks have the same origins.
Therefore, "ivory" can correctly be used to describe any mammalian teeth or tusks of commercial interest which is large enough to be carved or scrimshawed. The chemical structure of the teeth and tusks of mammals is the same regardless of the species of origin, and the trade in certain teeth and tusks other than elephant is well established and widespread. . Plastics have been viewed by piano purists as an inferior ivory substitute on piano keys, although other recently developed materials more closely resemble the feel of real ivory.
The word "ivory" was traditionally applied to the tusks of elephants. Prior to the introduction of plastics, it was used for billiard balls, piano keys, buttons and ornamental items. Ivory is a hard, white, opaque substance that is the bulk of the teeth and tusks of animals such as the elephant, hippopotamus, walrus, mammoth, etc. Elk Ivory from the bugling teeth of bull elk.
Warthog ivory. Hippopotamus ivory. Narwhal ivory. Sperm Whale and Killer Whale ivory.
Walrus ivory from the tusks of a bull walrus. Elephant and mammoth ivory from the tusks of bull elephants and mammoths.