Licence: Public Domain Mark
Credit: A text book of physiology / by M. Foster. Source: Wellcome Collection.
Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.
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![amount of fibrin i^^tta,^£ h f H f^', ■ «• diluted plasma unfilterefi' * obtalnable ^ the 8ame is aJretteT'8 italwl^ at frefnf emP^ture, the formation of ferment is arrested. _ if after the corpuscles have sunk the undermost layers of the fr X beinr.l wl 1°™^ 1°^°*' either wlie» examined immediately, or alter being allowed to clot at an ordinary temperature. In a portion tnere is -little or no ferment present before the coagulation of the specimen beTl eTed fnT^d f?f^^ ^ of *»» »me S co^nuscles 1 v. • °°id' ^ filtrate' wMc]l is nearl7 f«e from white corpUSCles, 1S very poor m ferment both before and after the feeble and cZ^Zf'^L f ?* ^.^0™; the material on the filter/ consisting almost entirely of white corpuscles, is very rich in ferment These facts seem to shew that the fibrin-ferment which is present in Wood feeble and^low^T^ * **** lUuted Plas™a ^ beeu said to be both WtRJ !f °f coagulati™ * *«> to the paucity of leiment the feebleness, t. e. the small quantity of fibrin produced must be due to the scantiness of one or both of the fibrin-factors. P On adding para globulin the quantity of fibrin produced is the same as thaTXenX the axne quantity of unfiltered plasma. The filtered ^LTiM^d^- Xbulin P^aSl°bfulm- Th° left on the filter is rich in para- globu in. The inference which A. Schmidt draws from these fact, is that but that fi bnnogen is a normal constituent of the plasma. cnraL ? * P™L °f ^0rSe>S p]asma kel5t from coagulating by cold be o? XI Z 6 miCr0&;C0P.e' ifc be found to contain alarge number rlZtl J1 'I™' mrX!d Tth Which acCOrdinS to A. Schmidt are cor- puscles of an intermediate character between white and red, i.e. nucleated cells whose protoplasm is loaded with coloured hemoglobin granules As the drop is watched, a large number of the white corpuscles and all the intermediate forms are seen to break up into a granular detritus. This 1 A. Schmidt, op. cit.](https://iiif.wellcomecollection.org/image/b21506917_0032.jp2/full/800%2C/0/default.jpg)
