Arteria Stapedia, in Bilateral Persistence

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Abstract
Hyrtl, in 1836, called attention to an artery which, similarly to the vessel found in some hibernating animals, ran across the obturator foramen of the stapes. A total of nine relevant observations became known. When the following description is counted as 13—or, as the phenomenon was found to be bilateral, as 13 and 14—it can be said that in the course of 120 years a dozen plus is the number of similar findings; in other words, a decade may pass before another example is added to the list. A 24-year-old white woman, who had had a single previous pregnancy, which, like the present one, was smooth, gave birth in the Boston Lying-in Hospital, by premature labor at 34 weeks, to a fairly well-nourished girl. The weight was 2910 gm.; CR length 30, and CH length 38.5 cm.; the cranial diameters were as follows: BP 8; SOM 10; SOF 10. At

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