1. The highlands as claimed by the United States, extending from the
northwesternmost head of the Connecticut River to the portage road which
leads from the St. Lawrence River to Lake Temiscouata.
2. The highlands as claimed by Great Britain from the Metjarmette
portage to the source of the Aroostook River.
3. All the principal heads or branches of the Connecticut River north of
the forty-fifth degree of latitude.
4. The St. John and all its principal branches or tributaries west of
the Alleguash River.