Evolution of the cochlea about 7 mm long. Like in lepidosaurs and archosaurs, it contains a lagena, a vestibular sensory epithelium, at its tip. Only in therian mammals (marsupials and placentals) is the cochlea truly coiled 1.5 to 3.5 times. Whereas in monotremes there are many rows of both inner and outer hair cells in the organ of Corti, in therian (marsupial and placental) mammals the number of inner hair-cell rows is one, and there are generally only three rows of outer hair cells. Amphibians have unique inner ear structures. There are two sensory papillae involved in hearing, the basilar (higher frequency) and amphibian
Gold Is Where You Find It February 12, 1938 by Warner Bros. Pictures. A new gold strike in California ten years after the American Civil War triggers a bitter feud between farmers and miners using hydraulic mining methods that flood the farmlands. "Gold is Where You Find It" was, in many respects, a routine Western, lifted out of the ordinary by its early use of the newly perfected 3-strip Technicolor process, its big-budget director and cast, and its musical score. During the early spring of 1937, producer Hal B. Wallis was looking for a project to film in Technicolor, as a dry run for "The Adventures