Specimens of Archaeopteryx The end of the feather has an obtuse angle of 110°, while the barbs branch off from the rachis at an angle of around 25°. The barbs branch noticeably into barbules, as in the feathers of modern birds. The base of the feather consists of plumulaceous barbs which are unconnected to one another and result in a down-like appearance. This tuft of down led Griffiths to conclude that "Archaeopteryx" might have been endothermic in that it implies the use of thermal insulation. The feather is clearly asymmetrical, which has been interpreted by many scientists to be a clear indication of
Acorus calamus of the fleeting nature of childhood: in the story, Alice picks scented rushes but complains that the prettiest ones are always just out of reach, while the ones she is able to reach fade and lose their scent as soon as they are plucked. The root of the calamus (Tamil vasambu வசம்பு) is cut into disc-shaped beads, and made into bracelets, which are typically worn by newborns for the first few months. A vasambu bracelet is a symbol of a newborn baby in Tamil culture. "A. calamus" and products derived from "A. calamus" (such as its oil) were banned from