established as a perpetual and unalterable regulation, or as what is called a fundamental law of the commonwealth, than any tax which was always to be levied according to a certain valuation.

Some states, instead of the simple and obvious expedient of a register of leases, have had recourse to the laborious and expensive one of an actual survey and valuation of all the lands in the country. They have suspected, probably, that the lessor and lessee, in order to defraud the public revenue, might combine to conceal the real terms of the lease. Domesday-Book seems to have been the result of a very accurate survey of this kind.

In the ancient dominions of the King of Prussia, the land-tax is assessed according to an actual survey and valuation, which is reviewed and altered from time to time.