166. And also they shall warn them, that without like great cause and necessity they procure not their Children to be baptized at home in their houses. But when need shall compel them so to do, then Baptism shall be administered on this fashion: 167. First, let the Minister of the Parish (or, in his absence, any other lawful Minister that can be procured) with them that are present call upon God, and say the Lord's Prayer, and so many of the Collects appointed to be said before in the Form of Publick Baptism, as the time and present exigence will suffer. And then, the Child being named by some one that is present, the Minister shall pour Water upon it, saying these words; _N_. I baptize thee, &c. Bishop Cosin observes: "It is not here said what shall be done in case a lawful Minister cannot be found; or whether the child ought to be baptized again, or no, when only a midwife, or some other such, hath baptized it before." According to the ancient custom of the church, recognized and affirmed in the case of Mastin _v_. Estcott (1841), a child baptized by a layman is validly baptized. It follows, that though Baptism by any other than a Bishop, Priest, or Deacon is discouraged, and is only excusable in extreme necessity, the Sacrament should not be repeated. In selecting the Collects for use after the Lord's Prayer, the Minister should be careful to prefer those which would not be used in the church, when the child (if it afterwards live) is brought into the church. He will therefore say (if time and present exigence will suffer) the Collects beginning, Almighty everlasting God, who of Thy great mercy, &c. Almighty and Immortal God, the aid of all that need, &c. O merciful God, grant that the old Adam, &c. Almighty ever-living God, &c., which last Collect should always be used, except in a case of extremest urgency. 168. Then, all kneeling down, the Minister shall give thanks unto God, and say, We yield Thee, &c. 169. And let them not doubt, but that the Child so baptized is lawfully and sufficiently baptized, and ought not to be baptized again. THE RECEIVING OF THE CHILD IN THE CHURCH. 170. Yet nevertheless, if the Child, which is after this sort baptized, do afterward live, it is expedient that it be brought into the Church, to the intent that, if the Minister of the same Parish did himself baptize that Child, the Congregation may be certified of the true Form of Baptism, by him privately before used: In which case he shall say thus, I certify you, &c. 171. But if the Child were baptized by any other lawful Minister, then the Minister of the Parish, where the Child was born or christened, shall examine and try whether the Child be lawfully baptized, or no. In which case, if those that bring any Child to the Church do answer, that the same Child is already baptized, then shall the Minister examine them further, saying, By whom, &c.