Function of circulating and distributing nutriment through the colony.
In this respect the Asiatic species differs very widely from its African relative, whose nutriment is largely composed of boughs and roots.
In the Hydromedusae they usually, if not invariably, ripen in the ectoderm, but in the neighbourhood of the main sources of nutriment, that is to say, not far from the stomach.
No regular follicle is formed, but the odcyte absorbs nutriment from the remaining odgonia.
In Hydra the odcyte is a large amoeboid cell, which sends out pseudopodia amongst the odgonia and absorbs nutriment from them.
The chief and almost the only use of dung, he thinks, is to divide the earth, to dissolve " this terrestrial matter, which affords nutriment to the mouths of vegetable roots "; and this can be done more completely by tillage.
In the case of the common drone-fly, Eristalis tenax, the individual, from a sedentary maggot living in filth, without any relations of sex, and with only unimportant organs for the ingestion of its foul nutriment, changes to a creature of extreme alertness, with magnificent powers of flight, living on the products of the flowers it frequents, and endowed with highly complex sexual structures.
Hermann Hettner says that not only Leibnitz, Voltaire and Diderot, but Lessing, Mendelssohn, Wieland and Herder, drew the most stimulating nutriment from Shaftesbury.
Correlated with the mode of life are the two features character istic of all Sporozoa: (a) They absorb only fluid nutriment, osmotically, and so lack any organs for ingesting and digesting solid food; and (b) they reproduce by sporulation, i.e.
On the ground that the assimilable nutriment from a given weight of selected fruit and grain and nut and vegetable foods will cost less than the same nutriment obtained from flesh foods.
Shelley in Triumph of Life, 201 seq., wrote, "And if the spark with which Heaven lit my spirit Had been with proper nutriment supplied," but the printed editions made it "sentiment."
As is so often the case with animals which eat mud and sand, and extract what little nutriment is afforded by the organic debris therein, the walls of the alimentary canal are thin and apparently weak.
Thus a very strong heart, although it may be useful to its possessor for many years, driving the blood rapidly through the vessels, and supplying all his tissues with such abundant nutriment as to enable him to endure great exertion, mental or bodily, may in the end cause death by bursting a vessel in the brain, which might have resisted the pressure of a feebler circulation for years longer.
In order to keep the blood in a satisfactory condition it must be well supplied with fresh nutriment, and the products Nutrition of waste freely eliminated.
The general principle in their preparation is to supply cutt;va- the nutriment for bacterial growth in a form as nearly g y similar as possible to that of the natural habitat of the organisms - in the case of pathogenic bacteria, the natural fluids of the body.
A few of the lower internodes may become enlarged and subglobular, forming nutriment-stores, and grasses so characterized are termed " bulbous " (Arrhenatherum, Poa bulbosa, &c.).
When entirely deprived of nutriment the human body is ordinarily capable of supporting life under ordinary circumstances for little more than a week.
The point common to all Pteridophyta is that from the first the gametophyte is an independent organism, while the sporophyte, though in the first stages of its development it obtains nutriment from the prothallus, becomes physiologically independent when its root develops.
The commentaries of the Arabians in this respect supplied nutriment more readily assimilated by the pupils than the pure text would have been.
But these exceptional and dubious forms do not obtain nutriment by sending rootlets in a rhizocephalous manner into their patrons.
The ideal soil for vinegrowing is that which possesses a sufficiency, but not an excess, of nutriment for the plant, and which is so constituted that it will afford good drainage.