tinctive names to several of the prominent features of Katahdin. Also he was the first to attempt a comprehensive collection of the marine algae of the State of Maine, and the first to survey the hard- wood forests of York County.1 Aaron Young, Jr., was born in Wiscasset, Maine, December 19, 1819, the son of Aaron and Mary Colburn Young. Aaron Young, Sr., was the son of David Young, a pioneer of Pittston, Maine, and Mary Colburn Young, mother of Aaron, Jr., was the daughter of Oliver Colburn, son of Captain Reuben Colburn, who furnished batteaux for Arnold's expedition to Quebec. Aaron Young Sr., was Justice of the Peace and Coroner 1821-1823 at Wiscasset, and held the title of Justice of the Peace at Bangor for a number of years subsequent to 1829, and for a longer time that of Surveyor of Lumber at the im- portant port of Bangor, then the metropolis of the lumber industry in Maine. Aaron Young, Jr., was schooled at Gorham Academy and Teacher's Seminary. This was followed by two years at Bowdoin College and finally attendance at Jefferson Medical School in Philadelphia, where "he was graduated in medicine." At Bowdoin College, he was so deeply devoted to the sciences of botany, mineralogy and chemistry, that Professor Parker Cleaveland made him Assistant in Chemistry. By his own statement it appears that he spent two years teaching at Paris, Maine, "part of the time associated with our friend, and part of the time as Principal. We did all we could to keep the insti- tution alive and think our interest was deeply appreciated. The Aesthetic assemblies established by ourself were the scholars pastime, instructive and amusing. We hope they are now continued. We wish our friend and the institution all sorts of success." (1854 "Diarium" in Touchstone, May 24). While a student at Gorham he was very active in a natural history society in that town, which has long been forgotten. In 1839 and 1840 he was Secretary of the Bangor Natural History Society, which many years ago shared the fate of that at Gorham. Yet the Bangor a little further to the south than the route taken by Dr. Young, thus avoiding the ascent of Mount Russell. Reaching the summit, they became enveloped in clouds with rain and were assailed by a heavy wind. They reached only the southern end of the North Mountain. Dr. Hale gathered about 20 species of plants in series of 20 each for Dr. Gray. (Boston Daily Advertiser Aug. 15, 1845; revised 1901, Appalachia IX (111-iv) 277-289). i Dr. George B. Emerson, born in Kennebunk, Maine, in his "Trees and Shrubs of Massachusetts" had mentioned a number of the rarer species found in York County. Dr. Young was familiar with Emerson's work and probably was inspired by it to make his prolonged "survey" in this region, [JANUARY Rhodora