6. For the carrying out of this Act, the Territory is divided into three zones:
(a) the “northern zone” : that portion of the Territory lying north of the 50th parallel of latitude;
(b) the “middle zone” : the area within a perimeter starting from a point located at the intersection of the Québec/Ontario boundary line with the southern line of Massicotte township; thence easterly along the southern line of Massicotte, La Peltrie, Lanouillier, Gaudet, Fénelon, Subercase, Grasset, La Pérousse and Corbière townships to the west side of lake Matagami; thence, generally in a southeasterly direction, the west side of lake Matagami, the left bank of the Bell river (along the northeast shore of Canica island) to the northern line of Comtois township; thence easterly along the northern line of Quévillon, Verneuil, Wilson, Ralleau, Effiat, Carpiquet and Urban townships, the western line of Belmont township, the northern line of Belmont, L’Espinay, Bressani, Chambalon, Beaucours, Feuquières and Poutrincourt townships to the eastern boundary of the Territory; thence northeasterly along the said boundary of the said Territory to the 50th parallel of latitude; thence westerly along the said parallel of latitude to its meeting with the Québec/Ontario boundary line, thence southerly along the said boundary line to the starting point;
(c) the “southern zone” : that portion of the Territory lying south of the middle zone.