Microscopical morphology of the animal body in health and disease / by C. Heitzmann. With 380 original engravings.
- Carl Heitzmann
- Date:
- 1883
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.
122/884 page 96
![nucleolus, the nucleus, the granules with their threads, are the living- contractile matter proper.'' Aside from some conditions which do not here concern us, he descri])ed and illustrated three states of the net-work—viz., that of rest, that of contraction, and that of extension. A fourth state of the hving matter is assumed (hypotheticaUy) by the same investigator, to account for the formation of a flat layer of living matter, such as forms the walls of a vacuole, the membrane of a nucleus, or the outer layer of the whole bioplas- son mass. Heitzniann beheves that each of these states may at any time change into the other—/. e., that the net-work may from the condition of rest be transformed into that of contraction, or of extension, or of flattening, and from each of these into either of the others. At all events, there may arise in the bioplasson body a vacuole having a continuous thin wall, and containing lifeless fluid and detached particles of the living matter. Or, a bioplasson mass may take into its interior foreign bodies l)y forming around them a cul-de-sac, which then opens toward the center and closes at the periphery, and the net-work, rent during the process, reestablishes itself. Again, a bioplasson body, which by flap or knob protrusion and separation has lost a portion of its substance, as well as the portion detached, may become rounded off—the rui)ture at the place of detachment healing in each case without loss of Hfe. And further, two bio- plasson bodies may coalesce, and a portion of the periphery of each be transformed into the uniting net-work. By adopting these views, and applying them to the living matter of colored blood-corpuscles, we may explain the changes which they have been observed to be subject to. What are the changes that occur on the addition of a 40 per cent, saturated solution of bichromate of potash ? I have described indentations and protrusions which either persist or are leveled again; pro- trusion of knobs, either pedunculated or sessile, which sometimes are so numerous that they surround the body of the corpuscle like a wreath; decrease of the size of the main body by detach- ment of knobs; appearance of net-work structure, most marked in the corpuscles which have not lost much of their substance; vacuolation of corpuscles, and transformation of many of the portions detached into vacuoled globules which increase in size; finally, change into faint, almost structureless disks, the so-called '' ghosts.*'](https://iiif.wellcomecollection.org/image/b21219163_0122.jp2/full/800%2C/0/default.jpg)
