National Geographic : 1937 Apr
WHEN EQUESTRIENNES RIDE THROUGH THE FOREST AT DAWN OR DUSK, THORNY TRAILS APPEAR LINED WITH WEIRD GHOSTS Since moisture is scarce, saguaros grow only an inch or two a year. Unlike true trees, they have no rings from which their agecan beexactly determined. Some ofthem undoubtedly have lived 250 years or more. Indians brewed a bitter tea from bushy greasewood, here seen inclumps among thecacti.