On the structure and development of connective substances / by Thomas E. Satterthwaite.

  • Satterthwaite, Thomas E. (Thomas Edward), 1843-1934
Date:
1876
Catalogue details

Licence: Public Domain Mark

Credit: On the structure and development of connective substances / by Thomas E. Satterthwaite. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    tissue,1 as I have had an opportunity of studying it in the um- bilical cord. Where the tibrous networks have attained some thickness, there it seems that we find the ordinary flattened connective-tissue plates lying on the bundles, and surrounded by a delicate envelope in some cases. It is not inconsistent with this theory that some, at least, of these lymphoid corpuscles may originate from the flattened corpuscles of the adenoid tissue, for it appears sometimes as if this production of the corpuscles could really be seen. 4. Neuroglia or Bind-web [Seguin], (Figure 7).—But a short time since, it was not known positively whether the delicate cementing substance of the nervous system, but more especially of the brain, was granular or fibrous. Even after Virchow claimed that this substance was like the other tissues known as connective, doubt was still thrown upon the matter, for the defining power of the objectives then used was often insufficient to make out these delicate objects. At the present time the actual existence of such a delicate network is hardly called in question, for it maybe demonstrated with really good glasses, such as some of the immersion lenses (No. 10) of Hart- nack's system. As to the question of the corpuscular ele- ments there is, even now, some question, and it can hardly be regarded that their exact form and shape have been definitely agreed upon by histologists. We find, it is true, that, where there is considerable development of connective material along the central canal of the spinal cord, there we have the ordinary fibres and corpuscles already described, and so, too, near the surface of the convolutions. When, however, we ex- amine the supporting substance of the white and gray masses, it is more doubtful as to the character of the delicate tissue we meet with. The real condition may be tolerably well seen by adopting the following plan. Place any portions of the brain or cord in a weak solution of bichromate of potash (five per cent.) or Miiller's fluid for a few days, and then immerse it in alcohol until hard, and make thin sections, which stain in the following solution of hematoxylin for twenty-four hours: Hsematoxylini, gr. Hi. Aluniinis, lj- Aquca, ! viij. M. and strain. 1 See Figure 4.
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