Truth and Error or the Science of Intellection John Wesley Powell, soldier, geologist, explorer of the American West (1834-1902) This ebook presents «Truth and Error or the Science of Intellection», from John Wesley Powell. A dynamic table of contents enables to jump directly to the chapter selected. Table of Contents -01- About this book -02- CHUAR’S ILLUSION -03- ESSENTIALS OF PROPERTIES -04- QUANTITIES OR PROPERTIES THAT ARE MEASURED -05- KINDS OR PROPERTIES THAT ARE CLASSIFIED -06- PROCESSES OR THE PROPERTIES OF GEONOMIC BODIES -07- GENERATIONS OR PROPERTIES OF PLANTS -08- PRINCIPLES OR PROPERTIES OF ANIMALS -09- QUALITIES -10- CLASSIFICATION -11- HOMOLOGY -12- DYNAMICS -13- COO¨PERATION -14- EVOLUTION -15- SENSATION -16- PERCEPTION -17- APPREHENSION -18- REFLECTION -19- IDEATION -20- INTELLECTIONS -21- FALLACIES OF SENSATION -22- FALLACIES OF PERCEPTION -23- FALLACIES OF APPREHENSION -24- FALLACIES OF REFLECTION -25- FALLACIES OF IDEATION -26- SUMMARY