The Court may decree that the rent previously payable by any tenant having a right of occupancy may be enhanced on any of the following grounds:
1st Ground. That the quantity of land held by him as tenant exceeds the quantity for which he has previously been liable to pay rent.
Rule. In this case the Court shall decree rent for the land in excess at the same rate as that payable in respect of the land of a similar description and with similar advantages held by him of the same landlord.
2nd Ground. That the rate of rent paid by him is below the rate of rent usually paid in the same or adjoining villages by the same class of tenants having a right of occupancy for land of a similar description and with similar advantages.
Rule. In this case the Court shall enhance his rent to the amount claimed by the plaintiff not exceeding such rate.
3rd Ground. That the rate of rent paid by him is,
if he belong to the class described in clause 1 of section five, more than fifty per centum,
if he belong to any of the classes specified in clause 2, 3 or 4 of section five, more than thirty per centum,
and if he belong to the class specified in section six, more than fifteen per centum,
below the rate of rent usually paid in the neighbourhood by tenants of the same class not having a right of occupancy for land of a similar description and with similar advantages.
Rule. In this case the Court shall enhance his rent to the amount claimed by the plaintiff not exceeding such rate, less fifty per centum, thirty per centum or fifteen per centum, as the case may be.