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We discuss and clarify several aspects of applying Felsenstein's (1985, Am. Nat. 125: 1-15) procedures to test for correlated evolution of continuous traits. This is one of several available comparative methods that maps data for phenotypic traits onto an existing phylogenetic tree (derived from independent information). Application of Felsenstein's method(More)
Ancient ancestors of the giant sequoia (Sequoiadendron giganteum [Lindl.] Buchholz) were widespread throughout much of the Northern Hemi­ sphere during the late Mesozoic Period. Climatic conditions changed, forcing the more recent ancestors of present giant sequoia into the southwestern United States. The native range is now restricted to the west slope of(More)
inches, or 0.838 m] but as I approached the coast I sometimes found no bottom. This leads me to believe there are some reefs or sandbanks on this coast, which is also shown by the color of the water. In some places the coast ends in a beach, and in others in steep cliffs. (Beals, 1985, p. 89) This was the first reliable European sighting of the central(More)
The in-situ lens-bound protein layer (LBPL) was characterized on hydrogels of varying water content and ionic-binding capacity. The LBPL proved to be critically dependent on the ionic binding capacity of a given hydrogel. On nonionic polymers the LBPL invariably was thin and largely insoluble. Histochemical staining allowed the detection of all major types(More)
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