[Footnote 37: GEFFCKEN, _Ehescheidung_, 18-20. In general on the views of the early Fathers see also FREISEN, _Geschichte des can. Eherechts_, 770 ff.; ESMEIN, _Le mariage en droit canonique_, II, 48-55; MEYRICK, in _Dict. Christ. Ant._, II, 1110; WOOLSEY, _Divorce_, 86 ff., 107 ff.; POPP, _Ehescheidung_, 54 ff.; GREVE, _Ehescheidung_, 190 ff.; _Observations on Mar. Laws_, 330 ff.; MOY, _Eherecht der Christen_, 10-45; ZHISHMAN, _Das Eherecht der orient. Kirche_, 99-102; LUCKOCK, _Hist. of Marriage_, 80-153; TEBBS, _Essay_, 125 ff.; MILTON, "Tetrachordon," _Prose Works_, III, 414 ff.; BURNET, _Hist. of the Reformation_, I, 26-133, 330 ff., who discusses Henry VIII.'s divorce from Queen Katherine and summarizes the results of Cranmer's examination of the Fathers and early canons in connection with the Northampton case. Burnet's summary is also given by GEARY, _Marriage and Family Relations_, 577, 578. For the Roman Catholic view see particularly CIGOI, _Unauflösbarkeit der ch. Ehe_, 1 ff.; ROSKOVÁNY, _De mat. in ecc. cath._, II, 1 ff., 187 ff., 198 ff.; PERRONE, _De mat. christ._, III, 221 ff.] [Footnote 38: _Cf._ GEFFCKEN, _op. cit._, 18.] [Footnote 39: ESMEIN, _op. cit._, I, 220 ff.; II, 268 ff.] [Footnote 40: Or "fornication," the _porneia_ of Matthew.] [Footnote 41: _Cf._ the sources cited by FREISEN, _Geschichte des can. Eherechts_, 770; MEYRICK, in _Dict. Christ. Ant._, II, 1110. This view is taken by AUGUSTINE, _De serm. dom. in monte_, c. xvi; but he doubts its correctness in the "Retractions;" MEYRICK, _loc. cit._ Tertullian shows also that mishandling and insult, as well as adultery, are considered sufficient grounds of separation: GEFFCKEN, _Ehescheidung_, 20, 21. See however, PERRONE, _De mat. christ._, III, 231 ff.]