Special Provisions as to Advowsons, & c. Special Provisions as to Advowsons, & c. 33Power to sell advowsons, &c. 34Power to purchase advowsons, &c. 35Power to substitute lands, &c. for rents, &c. as endowments of benefices. 36Severances of benefices from headships of colleges. 37Power to transfer advowsons, &c. gratuitously. Special Provisions as to Advowsons, & c.