The Dublin practice of midwifery / by Henry Maunsell.

  • Henry Maunsell
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: The Dublin practice of midwifery / by Henry Maunsell. Source: Wellcome Collection.

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    proportionally increased in another. The situ- ation and yielding nature of the sutures require to be attended to; their general dii-ection is the same as in the adult^ but the sagittal is always prolonged, as we have mentioned^ to the root of the nose : sometimes, but rarely, it passes back- ward into the occipital bone. At the junction of the lambdoid and sagittal sutui'es, owing to the non-ossification of the occipital and parietal bones, a triangular space is left, closed only by cartilage, and called the lesser or posterior fontanelle. A similar but larger space occurs between the pa- rietal and frontal bones, at the intersection of the coronal and sagittal sutures. This is termed the greater or anterior fontanelle, and is distinguish- able by being lozenge-shaped, and having four concurrent sutui'es, while the former is triangidar, and has onlv three concurrent suttu'cs. A know- ledge of the differences between these fontanelles may sometimes assist us in a diagnosis of the situation of the head during labour. We shall now inquire into the dimensions of the standard foetal head, which are usually mea- sured by hues, somewhat loosely denominated diameters. The shortest of these is the bi-parietal, or that stretched between the tuberosities of the parietal bones on either side, and is about three inches and a half, or three inches and a quarter in length;
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