Trachea act as a resonator to amplify sound. In some birds, the tracheal rings are complete, and may even be ossified. In amphibians, the trachea is normally extremely short, and leads directly into the lungs, without clear primary bronchi. A longer trachea is, however, found in some long-necked salamanders, and in caecilians. While there are irregular cartilagenous nodules on the amphibian trachea, these do not form the rings found in amniotes. The only vertebrates to have lungs, but no trachea, are the lungfish and the "Polypterus", in which the lungs arise directly from the pharynx. The word "trachea" is used to
Spelling of Shakespeare's name centre is most commonly used, and why it is sometimes hyphenated. Kathman argues that any name that could be divided into two clear parts was liable to be hyphenated, especially if the parts could be interpreted as distinct words. Later editions of Shakespeare's works adopted differing spellings, in accordance with fashions of modernised spelling of the day, or, later, of attempts to adopt what was believed to be the most historically accurate version of the name. When he was referred to in foreign languages, he acquired even more variant spellings. 18th-century French critics were known to use "Shakpear, Shakespehar, Shakespeart,