How come mathematicians published in Annals of Eugenics? I was surprised to see that On the construction of balanced incomplete block designs by Raj Chandra Bose was published (in 1939) in a journal named Annals of Eugenics (see here) (published between 1925 and 1954).
I double checked and it seems that the journal was indeed focused on eugenics and the article does not relate to eugenics or genetics in any way. So why would a mathematician decide to publish in such a journal and why was the article accepted?
It appears that there are also other mathematics articles published in the same journal.
 A: Eugenics and agriculture were two areas of application that motivated much of early 20th century statistics. The paper was a continuation of research on the use of Latin squares in experimental design for those areas. It says so explicitly on the second page:

It was, however, only about [1925] that the importance of
  combinatorial problems, for the proper designing of biological
  experiments, began to be understood, mainly through the work of Prof.
  R. A. Fisher and his associates.

At the time, Fisher was head of the Department of Eugenics at University College London.
A: The zbMATH journal profile https://zbmath.org/serials/?q=se%3A00009697 has 137 reviews for documents from this journal indexed in old Jahrbuch and Zentralblatt issues, of overall 49 mathematicians. Apart from Fisher's own contributions, Bose's paper on block designs Bose, R. C., On the construction of balanced incomplete block designs, Ann. Eugenics 9, 353-399 (1939). ZBL0023.00102. mentioned in the question might have been the most influential (at least, it is the one most frequently cited in subsequent reviews).
A: One should note that in the pre-WWII period eugenics was not the dirty word that it became later. Actually it was a popular notion across the world, including in countries like the United States. The division of humanity into races and the idea that humanity could (and should) be improved by selective breeding was mainstream. Statistics was one of the enabling scientific disciplines and few mathematicians/statisticians of the time would have had moral qualms about publishing in the Annals of Eugenics.
