This observation led him to further work, and he succeeded in showing that in vascular organs the presence of cells in inflammatory exudates is not the result of exudation but of multiplication of pre-existing cells.
The resin contains, in addition to the beautifully preserved plant-structures, numerous remains of insects, spiders, annelids, crustaceans and other small organisms which became enveloped while the exudation was fluid.
This pressure leads to the filling of the vessels of the wood of both root and stem in the early part of the year, before the leaves have expanded, and gives rise to the exudation of fluid known as bleeding when young stems are cut in early spring.
The great plain in Sheng-king is in many parts swampy, and in the neighbourhood of the sea, where the soil emits a saline exudation such as is also common in the north of China, it is perfectly sterile.
The quantity of proteid matter in a purely dropsical effusion never amounts to that of an inflammatory exudation (Lassar).
It may here be remarked that the name "European frankincense" is applied to Pinus Taeda, and to the resinous exudation ("Burgundy pitch") of the Norwegian spruce firs (Abies excelsa).
I i), the resinous exudation of Cistus creticus, C. ladaniferus and other species of "rock rose" or "rose of Sharon"; myrrh (Heb.
Olibanum of Java), corrupted in the parlance of Europe into benjamin and benzoin; camphor, produced by Cinnamomum Camphora, the "camphor laurel" of China and Japan, and by Dryobalanops aromatica, a native of the Indian Archipelago, and widely used as incense throughout the East, particularly in China; elemi, the resin of an unknown tree of the Philippine Islands, the elemi of old writers being the resin of Boswellia Frereana; gumdragon or dragon's blood, obtained from Calamus Draco, one of the ratan palms of the Indian Archipelago, Dracaena Draco, a liliaceous plant of the Canary Island, and Pterocarpus Draco, a leguminous tree of the island of Socotra; rose-malloes, a corruption of the Javanese rasamala, or liquid storax, the resinous exudation of Liquidambar Altingia, a native of the Indian Archipelago (an American Liquidambar also produces a rose-malloes-like exudation); star anise, the starlike fruit of the Illicum anisatum of Yunan and south-western China, burnt as incense in the temples of Japan; sweet flag, the root of Acorus Calamus, the bath of the Hindus, much used for incense in India.
Balsam of Tolu, produced by Myroxylon toluiferum, a native of Venezuela and New Granada; balsam of Peru, derived from Myroxylon Pereirae, a native of San Salvador in Central America; Mexican and Brazilian elemi, produced by various species of Icica or "incense trees," and the liquid exudation of an American species of Liquidambar, are all used as incense in America.
In this form a large number, after being cooked or stoved in moist heat for about twenty-four hours, are piled between plates in an hydraulic press, and subjected to great pressure for a month or six weeks, during which time a slow fermentation takes place, and a considerable exudation of juice results from the severe pressure.
Cedria, or cedar resin, is a substance similar to mastic, that flows from incisions in the tree; and cedar manna is a sweet exudation from its branches.
Bacon describes oak-apples as " an exudation of plants joined with putrefaction."
On the French Alps a sweet exudation is found on the small branchlets of young larches in June and July, resembling manna in taste and laxative properties, and known as Manna de Briancon or Manna Brigantina; it occurs in small whitish irregular granular masses, which are removed in the morning before they are too much dried by the sun; this manna seems to differ little in composition from the sap of the tree, which also contains mannite; its cathartic powers are weaker than those of the manna of the manna ash (Fraximus ornus), but it is employed in France for the same purposes.
11) present the appearance of flat bands, the exudation from the two spinnerets being joined at their flat edges.
A large portion of the plain, being an alluvial deposit, is extremely fertile, but in the neighbourhood of the sea the saline exudation common in the north of China renders futile all attempts at cultivation.
The seeds when placed in water for some time become coated with glutinous matter from the exudation of the mucilage in the external layer of the epidermis; and by boiling in sixteen parts of water they exude sufficient mucilage to form with the water a thick pasty decoction.
MANNA, a concrete saccharine exudation obtained by making incisions on the trunk of the flowering or manna ash tree, Fraxinus Ornus.
The tree is a native of the islands and shores of the Mediterranean, passing eastward into Central Asia; but the resinous exudation found in commerce is collected in the island of Chios.
The matters passed from the bowels, which at first resemble those of ordinary diarrhoea, soon change their character, becoming scanty, mucous or slimy, and subsequently mixed with, or consisting wholly of, blood, along with shreds of exudation thrown off from the mucous membrane of the intestine.
In the milder forms of the disease there is simply a congested or inflamed condition of the mucous membrane, with perhaps some inflammatory exudation on its surface, which is passed off by the discharges from the bowels.
Cherry tree gum is an exudation from trees of the genera Prunus and Cerasus.