The physiology and pathology of the blood : comprising the origins, mode of development, pathological and post-mortem changes of its morphological elements in mammalian and oviparous vertebrates / by Richard Norris ... With microphotographic illustrations.

  • Norris, Richard, 1830-1916.
Date:
1882
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Licence: Public Domain Mark

Credit: The physiology and pathology of the blood : comprising the origins, mode of development, pathological and post-mortem changes of its morphological elements in mammalian and oviparous vertebrates / by Richard Norris ... With microphotographic illustrations. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    formation of the granules and fragments which are called Page hseniatoblasts is entirely prevented—Due to the preservation of the corpuscles of the fufjitive firoup—Contrast of M. Hayenis and the author's views of the development of mammalian blood .. .. .. .. .. .. .. 70-99 SECTION V. ox THE MOKPHOLOGIC.iL PRODUCTS OF THE BLOOD GLANDS. Essential to reinvestigate the products of the blood-glands—This question has received comparatively little attention—No important advance since Hewson—Lymph corpuscles still regarded as identical with the white blood corpuscle—This view is opposed by an eminent minority—Opinions of Gulliver, Gray, Bennett, and Virchow—Virchow believes some of the gland elements develop into white blood corpuscles—Offers no opinion as to the origin of the red corpuscles, but leans to the view of Hewson—No further light thrown on this point bj' modern investigators—Confusion of the products of the blood- glands and the white corpuscles of the blood erroneous and perplexing—White blood corpuscles not even identical with each other—Certain white corpuscles have a close affinitj' to the products of the blood-glands—Uninuclear cells and free nuclei alone found in the blood-glands—These two kinds may be advantageously designated the primary and advanced lymph corpuscles—Between these extreme kinds all intermediate developments maybe found—Lymph corpuscles not one body but a graduated series—Most advanced corpuscles approximate closely to the invisible or colourless discs of the blood—State in which the advanced lymph discs usually present themseh'es for examination—Description of the primary lymph corpuscle— Different manner in which the primary and advanced lymph discs photograph—This pigment not to be confounded with haemoglobin—Tendency of advanced lymph coi-puscles to extend or spread—Spreading action can be restrained by salt and the corpuscular character be better preserved—Intermediate lymph discs well seen in thyroid of calf—Power of cane-sugar to preserve advanced lymph corpuscles—The lyinph discs become unstable in the ratio of their development—The more advanced the more susceptible to swelling and staining—Action of saline aniline blue on the most advanced lymph discs—Primary lymph corpuscles neither stain nor swell, but become contracted and distorted—Proportions of the two kinds vary in different glands—Iiitermediate lymph discs also distinguishable by the extent to which they swell and stain—Advanced lymph discs often detectable only by the graimles which adhere to them— Power of the ice-cold temperature to preserve the advanced lymph discs—Method of determining the source of the granules present—Saline aniline blue distinguishes the primary, advanced, and intermediate lymph discs from each other—Lymph corpuscles are structures undergoing continuous development which involves physical and chemical change— Reason they are so difficult to study—Advanced lymph disc the source of fibrin in lymph as the younger blood discs are in blood—To study the advanced lymph disc we must prevent it falling into fibrin—Eeason why the development of the red disc has been enshrouded in mystery—Mischief of confounding the various colourless elements—The colourless elements which