aw atom i ) ▁Native ▁tribes ▁and ▁was ▁obtained ▁through ▁the ▁Tre aty ▁of ▁Fort ▁Me igs . ▁In ▁ 1 8 2 1 , ▁the ▁university ▁was ▁officially ▁renamed ▁the ▁University ▁of ▁Michigan . ▁ ▁The ▁first ▁classes ▁in ▁Ann ▁Ar bor ▁were ▁held ▁in ▁ 1 8 4 1 , ▁with ▁six ▁fresh men ▁and ▁a ▁s oph om ore , ▁taught ▁by ▁two ▁profess ors . ▁Ele ven ▁students ▁graduated ▁in ▁the ▁first ▁comm enc ement ▁in ▁ 1 8 4 5 . ▁ ▁By ▁ 1 8 6 6 , ▁en roll ment ▁had ▁increased ▁to ▁ 1 , 2 0 5 ▁students , ▁many ▁of ▁whom ▁were ▁Civil ▁War ▁veter ans . ▁Women ▁were ▁first ▁admitted ▁in ▁ 1 8 7 0 , ▁although ▁Alice ▁Robinson ▁Bo ise ▁Wood ▁had ▁become ▁the ▁first ▁woman ▁to ▁attend ▁classes ▁( without ▁mat ric ulating ) ▁in ▁ 1 8 6 6 – 7 . ▁James ▁B urr ill ▁Ang ell , ▁who ▁served ▁as ▁the ▁university ' s ▁president ▁from ▁ 1 8 7 1 ▁to ▁ 1 9 0 9 , ▁ag gress ively ▁expanded ▁U - M ' s ▁curr icul um ▁to ▁include ▁professional ▁studies ▁in ▁dent istry , ▁architecture , ▁engineering , ▁government , ▁and ▁medicine . ▁U - M ▁also ▁became ▁the ▁first ▁American ▁university ▁to ▁use ▁the ▁sem inar ▁method ▁of ▁study . ▁Among ▁the ▁early ▁students ▁in ▁the ▁School ▁of ▁Medicine ▁was ▁Jose ▁Cel so ▁Barb osa , ▁who ▁in ▁ 1 8