Exudations and Rotting.The outward symptoms of many diseases consist in excessive discharges of moisture, often accompanied by bursting of over-turgid cells, and eventually by putrefactive changes.
Lime in hot weather is owing to exudations of sugar.
In many cases the punctures of Aphides and Coccideae are shown to be responsible for such exudations, and at least one instance is known where a FungusClaviceps-causes it.
But it also appears that honeydew may be excreted by ordinary processes of over-turgescence pressing the liquid through water-pores, as in the tropical Caesalpinia, Calliandra, &c. That these exudations on leaves should afterwards serve as pabulum for Fungie.g.
Many species produce gums and resins, their stems being encrusted with the exudations, and pungency and aromatic odour is an almost universal quality of the plants of desert regions.
In this way the danger of warping is averted, and exudations from the wooden surface are prevented from reaching the overlaid coats of lacquer.
Here it becomes encysted, and is nourished by the exudations of the fish.
Thus the bituminous and fatty matters found about the mummies and their wrappings were employed as a sovereign remedy, particularly for wounds and contusions, and a brisk trade began in these "exudations" of mummies.
The resins which are obtained as natural exudations are in general mixtures of different, peculiar acids, named the resin acids, which dissolve in alkalis to form resin soaps, from which the resin acids are regenerated by treatment with acids.
(Many such changes are usually grouped together under the heading of " inflammation " of varying degree--acute, subacute and chronic.) Degeneration and death of cells, haemorrhages, serous and fibrinous exudations, leucocyte emigration, proliferation of connective tissue and other cells, may be mentioned as some of the fundamental changes.
Nir-yasa, exudations from trees, and Gr.
Commencing in and around the solitary glands of the large intestine in the form of exudations, these ulcers, small at first, enlarge and run into each other, till a large portion of the bowel may be implicated in the ulcerative process.
"yawn"), the generic name given to a group of amorphous carbo-hydrates of the general formula (C6H1005)n, which exist in the juices of almost all plants, and also occur as exudations from stems, branches and fruits of plants.
Some of these, such as resins, gums, essential oils and fats, are readily obtained as natural exudations or by very simple manipulations, while others, such as the alkaloids, glucosides and vegetable acids, often require to be extracted by very complex processes.
A widow must shave her head, smear her body with black and the exudations of the corpse, and wear mourning for a long time.