whiCh oF thE Following is thE Author's mAin purposE in writing thE pAssAgE
A．to prEsEnt thE history oF hArvArD CollEgE AnD CompArE it with thAt oF yAlE univErsity.
B．to CritiCizE thE ConDitions oF thE u.s. univErsitiEs in thE 19th CEntury.
C．to DEsCriBE innovAtions in thE u.s. highEr EDuCAtion in thE lAttEr 1800s.
D．to introDuCE whAt wAs hAppEning in mAjor u.s. univErsitiEs BEForE thE turn oF thE CEntury.