A skull and crossbones is a symbol consisting of a human skull and two bones (long bones) crossed together under the skull. Today, it is generally used as a warning of danger, usually in regard to poisonous substances.
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History of the symbol
Actual skulls and bones were long used to mark the entrances to Spanish cemeteries (campo santo). The practice, dating back many centuries, led to the symbol eventually becoming associated with the concept of death.
In 1829, New York State required the labeling of all containers of poisonous substances. The skull and crossbones symbol appears to have been used for that purpose since the 1850s. Previously a variety of motifs had been used, including the Danish "+ + +" and drawings of skeletons.
In the 1870s poison manufacturers around the world began using bright cobalt bottles with a variety of raised bumps and designs (to enable easy recognition in the dark) to indicate poison, but by the 1880s the skull and cross bones had become ubiquitous, and the brightly coloured bottles lost their association.
Modern uses
Today, the skull and crossbones is still the only standard symbol for poison. It is, however, less common outside industrial usage than it once was. Apart from its negative marketing effect on environmentally conscious consumers, it may actually attract children due to its association with pirates, a popular toy and play theme. For this reason, in the United States there has been a proposal to replace the skull and crossbones by the "Mr. Yuk" symbol. However, Mr. Yuk and his graphic rendering are registered trademarks and service marks of his creator, the Children's Hospital of Pittsburgh of UPMC, and the rendering itself is additionally protected by copyright. This means that the name and graphic image cannot be used without a license from the owner—unlike the Skull and crossbones, which is in the public domain. It is also the alternante logo for many sports teams named Pirates.
See also
References
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