Don Ubben has been researching the life and ... - Oregon Pioneers

(312) Encyclopedia Britannica: is a printing process produced by etching in density of tone ratherthan by line.CHAPTER XIX(313) Ref: Wikipedia Encyclopedia: the term amygdaloid is derived from the Latin term for almonfand refers to the amygdale area in the brain. In this case it pertains to volcanic rock with small volatile cavities filledwith secondary minerals.(314) Ref: Wikipedia Encyclopedia: Vesicular lave is lava consisting with cavities.(315) Ref: Wikipedia Encyclopedia: Pudding-stone is a conglomerate mixture of rocks & pebbles,etc.(316) Ref: magnumArchive.com - Cyclopedia of the Useful Arts: Stenite is a granular aggregatedcompound rock, consisting of feldspar and hornblende, sometimes mixed with a little quartz and mica. Thehornblende is the characteristic ingredient, and serves to distinguish sienite from granite, with which it has beensometimes confounded; though the feldspar, which is generally red, is the more abundant constituent.(317) Ref: Wikipedia Encyclopedia: means to be notched into tooth like projections.(318) Ref: McGraw-Hill Science & Technology Encyclopedia: “A rigid material whose structurelacks crystalline periodicity, that is, the pattern of its constituent atoms or molecules does not repeat periodically inthree dimensions. In the present terminology amorphous and non-crystalline are synonymous.”(319) Ref: Webster’s Collegiate Dictionary: Castellated rock means pinnacled or havingbattlements like a castle and may consist of cairns.(320) Ref: saccharoidal – definition of saccharoidal by the Free Online Dictionary …: “(EarthSciences / Geolopgical Science) Also saccharoidal – Geology: having or designating a texture resembling that ofloaf sugar – sacharoid marble.”(321) Ref: Webster’s Collegiate Dictionary: Brecciated; means fragmented, i.e., a fragmented layer.(322) Ref: Alexander von Humboldt: Explorer and Naturalist: “Baron Alexander von Humboldt (September 14,1769-May 6, 1859) was a Prussian naturalist and explorer who explored much of Central and South America.Humboldt discovered what is now called the Humboldt Current off the west coast of South America… After theirSouth American expedition, Humboldt and Bonpland visited the USA and were guests of President ThomasJefferson in Washington D.C., for three months in 1804 (their visit happened just after Jefferson had sent Lewis andClark to explore the western US)…. At the age of 60, Humboldt traveled to the Ural Mountains in Siberia and toCentral Asia to study the weather. He wrote extensively of his travels and discoveries. One of his books, A PersonalNarrative inspired a young Charles Darwin. His last work was the multi-volume book, Kosmos, which tried to unifyall of science.”