Necessity of certainty, viz. certain commence- Of collateral determinations Forms of commencement 156 . 158 . 159 . 160 I. The theory of the law as it applies to a convey- ance by lease and release Feoffments and their advantages Circumstances under which alone a feoffment Ancient power of the owner of the freehold, to defeat the interest of termors, Use of grant, and circumstances under which Necessity of attornment to a grant till altered ib. PAGE. II. Principles on which this assurance depends 217 The difficulties which attended feoffments as of this mode of conveyance Assistance from the statute of uses under which estate ib. ib. . 218 220 221 . 222 Difference of opinion at first entertained . 230 The lease operates as a bargain and sale . 233 Mode of pleading the lease and release a release thereon Lease and release necessary only when a grant Rents, &c. may be conveyed by grant or by . ib. 234 ib. IV. Of a release grounded on a particular estate not created for the purpose of enlargement 242 Releases operating as grants The term possession again explained ib. 243 244 |