Der Versuch wurde noch durch zwei Generationen unter gleich ungünstigen Verhältnissen fortgeführt, da selbst unter den Nachkommen ziemlich fruchtbarer Pflanzen wieder ein Theil wenig fruchtbar oder ganz steril wurde.
The experiment was continued through two more generations under similarily unfavourable conditions, because even among the descendants of rather fertile progeny, one portion again became either little fertile or completely sterile.
generations = Generationen See p. 3, s. 8.
ganz = completely Throughout his translation, Bateson shows a tendency to translate ganz with “quite”, which is not wrong but ambiguous because of the wider and polyvalent meaning of “quite”. Especially here, it might be understood to mean “to a large extent”, but Mendel clearly says that the plants in question were totally sterile. We follow Sherwood.