Rachis Rachis Rachis is a biological term for a main axis or "shaft" (from the Greek "ράχις, backbone, spine"). In vertebrates a "rachis" can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the "rachis" usually forms the supporting axis of the body and is then called the spine or vertebral column. "Rachis" can also mean the central shaft of pennaceous feathers. In the gonad of the invertebrate nematode "C. elegans", a "rachis" is the central cell-free core or axis of the gonadal arm of both adult males and hermaphrodites where the germ cells have
A Bird in a Bonnet A Bird in a Bonnet A Bird in a Bonnet is a 1958 "Merrie Melodies" animated short starring Sylvester and Tweety. Released September 27, 1958, the cartoon is directed by Friz Freleng. The voices were performed by Mel Blanc, Daws Butler and June Foray. Granny visits a 1950's New York City hat shop looking for a new hat. The sales lady has her try on several hats, but Granny seems unsatisfied with each choice (a Napoleon chapeau makes her imitate Napoleon's hand in coat pose and chuckle "Not tonight, Josephine!"). Meanwhile, Sylvester is chasing Tweety outside and Tweety makes his