Neither is it true, as we have shown, that only four generations, in the sense of Dr.
I have sketched out in my Four Generations of a Literary Family my apprenticeship to bibliography.
I have mentioned in Four Generations of a Literary Family farther particulars of Mr Huth, which I of course do not here reproduce.
Stokvis disproves the allegation that the European is not able to produce in tropical regions more than three or four generations of true European blood, and that from the third or fourth generation onward sterility is the rule.
I have elsewhere cited an instance from Kiernan in which unilateral sexdigitism was found in four generations of Norwegian degenerates.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "four generations" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.