Excerpt from Archives of Medicine, Vol. 3: A Record of Practical Observations, and Anatomical and Chemical Researches Connected With the Investigation and Treatment of Disease; January, 1862
Fig. 12, Plate V, is a specimen of the mucous tissue from the umbilical cord, under a power of 130 diameters. The texture appears to be composed of delicate fibres with oval nuclei, which are for' the most part arranged to form the boundaries of small circular spaces, in which are seen more delicate fibres arranged without regularity. The interspaces between the fibres are occupied with a transparent ﬂuid.
In Fig. 13, some of the fibres and their nuclei are seen under a power of 700 diameters.
The preparations of this tissue which I have made exhibit a great number of the so-called fibre cells. In very many instances the continuity of the germinal matter with the outer fibrous portion of each elementary part is most distinct. I have not succeeded in demonstrating the appearance figured and described by Virchow. What appears to be a space or cavity in the centre of the elementary parts is really occupied with germinal matter, and the apparent tubes contain prolongations of this with the recently formed and soft fibrous tissue, which very readily breaks down. The arrangement of the fibrous tissue is shown in the drawing. It will be noticed that there is not the slightest resemblance between my drawing and Virchow's figures. (see pp. 98 and 100 of Dr. Chance's Translation.) It is impossible to represent in a wood engraving the extreme delicacy of the real fibres, but with this exception I think my drawing is a fair Copy of the specimen.
Fig. 14 represents some of the muscular fibre cells which form a very thick layer around the arteries of the cord. The relation and mode of formation of the formed material in both structures are the same, but its properties are very different.
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