Microscopical morphology of the animal body in health and disease / by C. Heitzmann. With 380 original engravings.

  • Carl Heitzmann
Date:
1883
Catalogue details

Licence: Public Domain Mark

Credit: Microscopical morphology of the animal body in health and disease / by C. Heitzmann. With 380 original engravings. 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.

    108/884 page 82
    H. Sehultz, who, however, has only repeated and confirmed * the experiment* of Hewson. Although not accepted without some opposition, it was not until the year 1861 that the existence of a cell-wall was positively denied. Beale declared :t I have never succeeded in seeing the cell-wall said to exist, neither have I been able to confirm the oft-repeated assertions with regard to the passage of liquid into the interior of the corpuscle by endosmose, its bursting, and the escape of its contents through the ruptured cell-wall. When placed in some liquids, many of the corpuscles swell up and disappear ; but I have never seen tie ruptured cell-walls. He also published observations which he considered fatal to the hjT)othesis that each corpuscle is composed of a closed membrane with fluid contents.i Briicke expressed the opinion that the rolling around of the nucleus is illusory, that other phenomena do not conclusively prove the presence of a membrane, and that the unanimity with which the vesicular nature of blood-corpuscles had for a long time been taught was owing more to the silence of the opponents than to the force of the arguments of the believers. $ Vintschgau || and Rollett 1 also argued against the existence of an investing membrane ; and the opinion seemed doomed. But before the end of the year in which Beale and Briicke contested the existence of an investing membrane, Hensen defended it. ** He reports having obsei'ved in the blood of frogs, both in fresh preparations—/. e., in red corpuscles examined without the addition of any re-agent — and in corpuscles placed in varioiis mixtures, especially a solution of sugar, that sometimes the membrane, as a distinct outer contom*. is lifted up from the interior contents at one or more points of the circumference, these interior contents being retracted more or less densely upon the nudeiLS. A few years later,tt Hensen reiterated his conviction as to the presence of a membrane; it is certain, therefore, that Lankesterit has misapprehended hLs meaning. Kolliker, who had previously asserted that the red blood-corpuscle possesses a very delicate but nevertheless tolerably firm and at the same time elastic colorless cell-membrane, composed of a protein substance closely allied to fibrin, $$ continued to uphold their vesicular constitution. |||| Preyer reported that the * Das S3-st<>in der Circulation. Stuttgart and Tubingen, 1836, p. 19, et seq. t Let-tares on the Structure and Growth of the Tissues of the Human Borly. Delivered at the Royal College of Physicians. Lecture III., April 22, 1861.' Archive.? of Medicine, vol. ii., No. 8 (May, 1861), p. 236. Kepublished in Quarterly Journal of ilicroncopical Science, vol. i., N. S. (Apnl-May, 1861), p. 240. t Observations iipim the Nature of the Red Blootl-corj'uscle. Transactions of the Micro- scopical Society, vol. xii., >'. S., p. 37. QuarUrly Journal of Microscopical Science, Jan., 1864. ^ Die Elenientarorganismen. Sitzungsberichte der Wiener Akademle, vol. xliv., Div.ll., p. 389 (read Oct. 17, 1861). II Sopra i Corpusculi Sangnigni della Rana. Atti del Instituto Veneto, vol. viii., Ser. in. f Versuehe und Eeobachtungen am Blnte. Sitziujgsberichte der Wiener Akademie, vol. xlvi. (1862), p. 65. **'Tntersuchnngen zur Physiologic der Elutkorperchen sowie fiber die Zellennattir derselben.' Zeit-schrift fur wis.senschaftliche Zoologie, vol. xi.. Heft 3 (Ansgegeben Dec. 23, 1861), pp. 25»-278. ttin a foot-note of an article entitled Ueber das Ange elniger Cephalopoden. Jbid., vol. XV.. Heft 2 (April 1, 1865), p. 170. ttLankester, in liis article on the red bloofl-corpnscle, in the Qvarterly Journal of Microscopical Science. October. 1871, already cited, says, p. 366, that Hensen distinguishes a layer of fluid ]irotoplasm surroumling the coloring matter, by cadaveiic alteration of which he believes the supposed membrane of the <:ori>nscle to be formed. ^Manual of Human Histology. Trau.slate<l and edited by George Bu.sk and Thomas Huxley, London, Sydenham Society. 1854, vol. ii., p. 326. nil Handbuch der Gewebelehre. 1863, p. 627.
    digitised image 1
    digitised image 2
    digitised image 3