Head lice / louse
Head lice are wingless insects spending their entire lives on the human scalp and feeding exclusively on human blood. Humans are the only known hosts of this specific parasite, while chimpanzees host a closely related species, Pediculus schaeffi. Other species of lice infest most orders of mammals and all orders of birds, as well as other parts of the human body.
Lice differ from other hematophagic ectoparasites such as fleas in spending their entire lifecycle on a host. Head lice cannot fly, and their short, stumpy legs render them incapable of jumping, or even walking efficiently on flat surfaces.
The non-disease-carrying head louse differs from the related disease-carrying body louse (Pediculus humanus humanus) in preferring to attach eggs to scalp hair rather than to clothing. The two subspecies are morphologically almost identical, but do not normally interbreed, although they will do so in laboratory conditions. From genetic studies, they are thought to have diverged as subspecies about 30,000–110,000 years ago, when many humans began to wear a significant amount of clothing. A much more distantly related species of hair-clinging louse, the pubic or crab louse (Pthirus pubis), also infests humans. It is visually different from the other two species and is much closer in appearance to the lice which infest other primates. Lice infestation of any part of the body is known as pediculosis.
Head lice (especially in children) have been, and still are, subject to various eradication campaigns. Unlike body lice, head lice are not the vectors of any known diseases. Except for rare secondary infections that result from scratching at bites, head lice are harmless, and they have been regarded by some as essentially a cosmetic rather than a medical problem. Head lice infestations might be beneficial in helping to foster a natural immune response against lice which helps humans in defense against the far more dangerous body louse, which is capable of transmission of dangerous diseases.
Both the city and the county were named for David Gouverneur Burnet, the first (provisional) president of the Republic of Texas. He also served as Vice President during the administration of Mirabeau B. Lamar.
Burnet is located one mile west of the divide between the Brazos and Colorado River watersheds near the center of Burnet County. It is 54 miles (87 km) northwest of the state capital, Austin – roughly a 1- to 1½-hour drive via U.S. Highway 183 and State Highway 29. It is 36 miles (58 km) west of Georgetown and Interstate Highway 35 via State Highway 29, and 100 miles (160 km) north of San Antonio on U.S. Highway 281.
According to the United States Census Bureau, Burnet has a total area of 10.2 square miles (26.3 km2), of which 10.1 square miles (26.2 km2) is land and 0.04 square miles (0.1 km2), or 0.32%, is water.