Help me! I am a girl lost and alone. I do not know who I am or where I am. Please find me. When the woman awoke, she did not know much. She knew her head hurt and her body ached. She knew there was blood streaking the side of her face, obscuring her vision. She knew the sun was beating down on her, hot and ruthless. But she did not know how she had gotten here, in this sandy, desert hell. She did not know where her injuries had come from. Most importantly, she did not know who she was.

Man's understanding of how this planet is put together and how it evolved has changed radically during the last 30 years. This great revolution in geology - now usually subsumed under the concept of Plate Tectonics - brought the realization that convection within the Earth is responsible for the origin of today's ocean basins and conti nents, and that the grand features of the Earth's surface are the product of ongoing large-scale horizontal motions. Some of these notions were put forward earlier in this century (by A. Wegener, in 1912, and by A. Holmes, in 1929), but most of the new ideas were an outgrowth of the study of the ocean floor after World War II. In its impact on the earth sciences, the plate tectonics revolution is comparable to the upheaval wrought by the ideas of Charles Darwin (1809-1882), which started the intense discussion on the evolution of the biosphere that has recently heated up again. Darwin drew his inspiration from observations on island life made during the voyage of the Beagle (1831-1836), and his work gave strong impetus to the first global oceanographic expedition, the voyage of HMS Challenger (1872- 1876). Ever since, oceanographic research has been intimately associ ated with fundamental advances in the knowledge of Earth. This should come as no surprise. After all, our planet's surface is mostly ocean.

"People of the Desert and Sea is one of those books that should not have to wait a generation or two to be considered a classic. A feast for the eye as well as the mind, this ethnobotany of the Seri Indians of Sonora represents the most detailed exploration of plant use by a hunting-and-gathering people to date. . . . Scholarship in the best sense of the term—precise without being pedantic, exhaustive without exhausting its readers."—Journal of Arizona History "To read and gaze through this elegantly illustrated book is to be exposed, as if through a work of science fiction, to an astonishing and unknown cultural world."—North Dakota Quarterly

Beads, beadwork, and personal ornaments are made of diverse materials such as shell, bone, stones, minerals, and composite materials. Their exploration from geographical and chronological settings around the world offers a glimpse at some of the cutting edge research within the fast growing field of personal ornaments in humanities’ past. Recent studies are based on a variety of analytical procedures that highlight humankind’s technological advances, exchange networks, mortuary practices, and symbol-laden beliefs. Papers discuss the social narratives behind bead and beadwork manufacture, use and disposal; the way beads work visually, audibly and even tactilely to cue wearers and audience to their social message(s). Understanding the entangled social and technical aspects of beads require a broad spectrum of technical and methodological approaches including the identification of the sources for the raw material of beads. These scientific approaches are also combined in some instances with experimentation to clarify the manner in which beads were produced and used in past societies.