There is a bechor in regard to inheritance who is not a bechor in regard to [redemption from] a Kohen, [one who is] a bechor in regard to [redemption from] a Kohen and [yet] not a bechor in regard to inheritance, [one who is] a bechor in regard to both inheritance and [redemption from] a Kohen, [and] there is one who is not a bechor either in regard to inheritance or [redemption from] a Kohen.  Who is a bechor in regard to inheritance who is not a bechor in regard to [redemption from] a Kohen? One who follows a nonviable fetus whose head emerged alive, or a nine-month fetus whose head emerged dead, or if she [had previously] aborted something resembling an animal, a beast, or a bird; [these are] the words of R’ Meir. The Sages, however, say: Until he has something of a human form. [If a woman] aborts a sandal, or an amniotic sac, or an embryo which had begun to take shape, or if a fetus comes out in pieces —- [the child] that follows [any of] them is a bechor in regard to inheritance but not in regard to [redemption from] a Kohen. [If] one who had no children married a woman who had previously given birth, [even if she had given birth] when she was a slave and she was the emancipated, [or] when she was a non-Jewess and she then converted, [and] after she became a Yisraelis she gave birth [again] —- he is a bechor in regard to inheritance but he is not a bechor in regard to [redemption from] a Kohen. R’ Yose HaGlili says: He is a bechor both in regard to inheritance and to [redemption from] a Kohen, as it says (Exodus 13:2): [Whatever] opens every womb among the Children of Israel —- until they open a Yisraelis’ womb.  [If] one who had children married a woman who had never given birth; [or if a woman] converted while pregnant, [or] was emancipated while pregnant; [or one who] bore a child together with a Kohen’s daughter, [or] with a Levi’s daughter, [or] together with a woman who had already given birth; and similarly, [a woman] who did not wait three months after her husband but married and gave birth, and it is not known whether [the child] is the nine-month child of the former or the seven-month child of the latter —- [he is] a bechor in regard to [redemption from] a Kohen but he is not a bechor in regard to inheritance.  Who is a bechor both in regard to inheritance and [redemption from] a Kohen? [If a woman] aborts a mass full of blood, full of water, [or] full of a variegated substance; [or if] she aborts something resembling fish, locusts, abominable creatures, or creeping things; [or] if she aborts on the fortieth day —- the one following them is a bechor in regard to [both] inheritance and [redemption from] a Kohen.