- Claudius Ptolemy (/ˈtɒləmi/; Greek: Πτολεμαῖος, Ptolemaios; Latin: Claudius Ptolemaeus; c. 100 – c. 170 AD) was a Roman mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importance to later Byzantine, Islamic, and Western European science. The first is the astronomical treatise now known as the Almagest, although it was originally entitled the Mathēmatikē Syntaxis or Mathematical Treatise, and later known as The Greatest Treatise. The second is the Geography, which is a thorough discussion on maps and the geographic knowledge of the Greco-Roman world. The third is the astrological treatise in which he attempted to adapt horoscopic astrology to the Aristotelian natural philosophy of his day. This is sometimes known as the Apotelesmatika (lit. “On the Effects”) but more commonly known as the Tetrábiblos, from the Koine Greek meaning “Four Books”, or by its Latin equivalent Quadripartite.
- Mount Stuart (summitpost.org)
“Without a rival as the crown peak in the central Cascades of Washington, Mount Stuart has been pronounced the single greatest mass of exposed granite in the United States…its northern and eastern faces are the alpine climax of the Wenatchee Mountains. They make a powerful impact on first sight…The mountaineering problems are magnified by the mountain’s massive dimensions and its complexity.” Excerpted from “Cascade Alpine Guide - Climbing and High Routes - Columbia River to Stevens Pass, Second Edition” by Fred Beckey.
