Browsing by Journal Issue "scas/vol36/iss1"
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California Pine Tip Moths of the Genus Rhyacionia
The larvae of the genus Rhyacionia are feeders on the buds and new growth of various species of pines, forming resinous exudations ; but never pitch nodules as in the genus Petrova. We find in the literature mention of a ... -
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Fluorite Beads in California
The use of the softer grades of stone, particularly steatite, in the manufacture of ornaments, by the pre-historic Indians of southern California is well known. However, the use of fluorspar or fluorite, as a similar ...