tˈuː ɐdˈɪʃənəl lˈaɪnz wɜːɹ ˈædᵻd ɪn dʒuːlˈaɪ nˈaɪntiːnhˈʌndɹɪd: ɐ bɹˈæntʃ ˌɔn hˈɑːɹvɚd stɹˈiːt tʊ wɪð θɹuː sˈɜːvɪs tuː , ænd ðɪ ˈɪpswɪtʃ stɹˈiːt lˈaɪn ˌɔn bɹˈʊklaɪn ˈævənˌuː.
Two additional lines were added in July 1900: a branch on Harvard Street to  (with through service to , and the Ipswich Street line on Brookline Avenue.