It must be remembered, however, that the number of Acts is not a conclusive test of the amount of enclosure, as there was a large amount that was non-parliamentary: by the principal landlord, and by freeholders who agreed to amicable changes and transfer, as at Pickering, in Yorkshire.[563] Roughly speaking, about one-third of the Acts were for enclosing commonable waste, the rest for enclosing open and commonable fields and lands.[564] Owing to the expense an Act was only obtained in the last resource. It was also because of the expense[565] that many landlords desirous to enclose were unable to.