Art. 108. Children born after the one hundred and eighty days following that of the celebration of marriage and before the three hundred days following its dissolution or the separation of the spouses shall be presumed legitimate children.

Against this presumption no other proof shall be admitted than that of the physical impossibility of the husband to have had access to his wife during the first one hundred and twenty days of the three hundred next preceding the birth of the child.

Art. 109. A child shall be presumed to be legitimate, even though the mother should have declared against its legitimacy or should have been convicted of adultery.

Art. 110. The child born within the one hundred and eighty days following the celebration of a marriage shall be presumed to be legitimate if any of the following circumstances exist:

1. If the husband knew, before the marriage, that his wife was pregnant.

2. If he, being present, consented that in the certificate of birth his name be given the child borne by his wife.

3. If he has expressly or impliedly acknowledged the child as his own.