Internal secretion and the ductless glands / by Swale Vincent ; with a preface by E. A. Schäfer.

  • Swale Vincent
Date:
1912
Catalogue details

Licence: In copyright

Credit: Internal secretion and the ductless glands / by Swale Vincent ; with a preface by E. A. Schäfer. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

    124/504 page 100
    general appearance and the same micro-chemical reaction as the corpuscles of Stannius, the cortical adrenals of Teleostean fishes, and the cortex of the adrenals of higher vertebrates.^ The effect of injection into the venous system of a mammal extract made from the paired bodies of Elasmobranchs is shown in Fig. 19. It will be seen that there is a very marked rise of the arterial blood-pressure. In Fig. 20 is seen the effect of the injection of an extract made from the inter-renal. There is a certain effect upon the blood-pressure which can be readily explained as the result of more or less admixture with medullary glands in making the extract. In Teleosts the cortical adrenal bodies are usually paired, round or oval, pale pink bodies, placed on the spinal or ventral surface of the kidney. They are near the posterior extremity of the renal mass, and are either free on its surface or more or less embedded in its substance (see Figs. 21 and 22). The constituent cells are of the same character, and have the same arrangement as those of the inter-renal of Elasmobranchs. It is now fully ascertained that these structures (the corpuscles of Stannius ) in Teleosts repre- sent the inter-renal of Elasmobranchs [Swale Vincent (720, 722, 728), and other papers; Diamare (210, 211); Srdinko (660, 661)]. It had been erroneously considered by some authors that the modified pronephros of Teleosts represents the adrenal body in these fishes.^ A very important discovery has recently been made by Giacomini (311, 312, 313), who finds that the corpuscles of Stannius are not the only representatives of cortical adrenal substance in teleostean fishes. He has worked out the sub- ject especially in many fishes of the eel tribe, and finds isolated bodies on the cranial border of the head kidney, on the anterior and posterior cardinal veins, which he con- siders are to be regarded as of the same general nature as the corpuscles of Stannius, though they present certain 1 See also Grynfeltt (334, 335, 336, 337, and other papers). ^ Since this view has now been completely abandoned, there is no need to revive the controversy. It was Rathke (599) who first put forward this theory, which was later revived by Weldon (744). The view was proved to be un- tenable by the present writer in 1895 (728). For a recent full account of the discussion, see H. Poll (586).
    digitised image 1
    digitised image 2
    digitised image 3