[Skip to Content]
[Skip to Content Landing]
May 2, 1908

The Determination of Sex.

JAMA. 1908;L(18):1441-1442. doi:10.1001/jama.1908.02530440051018

This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.


New Haven, Conn., April 25, 1908.

I am not a physician or a biologist, and were it not for the fact that I have been assured by both that no one really knows anything about the subject I choose to discuss, I would be very loath to tread on strange ground in the face of assured opposition. Since no one knows, however, I am prepared to submit the following dissertation for exactly what it is worth, the observation of a fairly good observer, wholly untrained in the subject.

Some years ago my attention was attracted to the question of determination of sex by a neighbor, a farmer, who had a Jersey bull which always sired heifer calves. Out of a whole season's get, I do not know how many, not more than one or two were bull calves. This bull was an exceedingly active, robust animal, I think the most

First Page Preview View Large
First page PDF preview
First page PDF preview