Adze volcanic rock 2

Stone adze blades collected in Hawai’i in the early 1840s by the U.S. Exploring Expedition and accessioned by the Smithsonian in 1858. Note that the blades are rectangular, the hafted end (where it is attached to the handle) left rough but the cutting edge and sides very smooth and even. Some are fairly flat, others quite thick, and these have different purposes. The National Museum of the American Indian.