The conditions which favour the vitality, growth and multiplication of the typhoid bacillus are the following: the soil should be pervious; it should be permeated with a sufficiency of decaying - preferably animal - organic matters; it should possess a certain amount of moisture, and be subject to a certain temperature.
Hybridization can also be readily controlled in the case of tobaccos, and in this connexion it is useful to note that, if pollen is desired of some variety growing at a distance, it will retain its vitality for several weeks if kept perfectly dry, and so can readily be sent by post from one place to another.
It is nothing to a Japanese that a vase should be covered with profuse decoration of flowers and foliage: he requires that every blossom and every leaf shall be instinct with vitality, and the comparative costliness of fine workmanship does not influence his choice.
We do not know how far the imaginations about Prester John retained their vitality in 1221, forty-four years after the letter of Pope Alexander, for we know of no mention of Prester John in the interval.
And when such declensions occurred, they soon called forth efforts at reform and revival; indeed these constantly recurring reformmovements are one of the most striking features of Benedictine history, and the great proof of the vitality of the institute throughout the ages.
Before his time instrumental music was chiefly written for the Paradiesensaal, and its melody often sacrificed vitality of idea to a ceremonial courtliness of phrase.
The common variety of bed-sore is the result of continuous pressure on and irritation of the skin, the vitality and resisting power of which are lowered by a lesion of the cord cutting off the trophic supply to the skin affected.
The cells met with in morbid parts which are in a state of active vitality are built up of the same components as those Structure of found in normal tissues (Pl.
In the laboratory absolute soil dryness is as distinctly antagonistic to the vitality of the diphtheria bacillus as soil dampness is favourable.
A fresh vitality was imparted by the transfer of the court from Kioto, and the town then received its present name Tokyo (eastern capital).
The power and vitality of the one is the power and vitality of the other, and this is so because they are not two things.
Persecution gave new vitality to their doctrines, which passed on to Wycliffe and Huss, and through these leaders produced the Reformation in Germany and England.
As in Europe, these northern peoples will hold the power which intelligent democracies are consciously absorbing, and the British faculty for statecraft is gradually welding new nations on the British model, without the obsolete traditions and without that human sediment which too frequently chokes the currents of national vitality in the older communities of Europe.
In general in ancient Greece, each state, city or village possessed its own central hearth and sacred fire, representing the unity and vitality of the community.
The coenosteum increases in size by new growth at the surface; and in the deeper, older portions of massive forms the tissues die off after a certain time, only the superficial region retaining its vitality down to a certain depth.
The middle ages saw geographical knowledge die out in Christendom, although it retained, through the Arabic translations of Ptolemy, a certain vitality in Islam.
Many traces of myth, legend and " primitive " thought survive in the Old Testament, and on the most cautious estimate they presuppose a vitality which is not a little astonishing.
Whatever may have been the immediate genesis of the myth - and it may well be sought in the heartless forest laws - its vitality was assured by the English love of archery and historical repetition.
In his next work, Die Meistersinger, Wagner ingeniously made poetry and drama out of an explicit manifesto to musical critics, and proved the depth of his music by developing its everyday resources and so showing that its vitality does not depend on that extreme emotional force that makes Tristan and Isolde almost unbearably poignant.
Upon its construction, and, on the other, upon the energy supplied to it; and to speak of "vitality" as anything but the name of a series of operations is as if one should talk of the "horologity" of a clock.
It may be asked, however, whether a dropsical tissue is being held in a high state of nutrition, and whether, on the contrary, the presence of lymph in excess in its interstices does not tend to impair its vitality rather than to lend it support.
His knowledge, his sympathy, his enthusiasm soon made themselves felt everywhere; the ruridecanal conferences of clergy became a real force, and the church in Cornwall was inspired with a vitality that had never been possible when it was part of the unwieldy diocese of Exeter.
When these various unions of dealers and of craftsmen embraced all the trades and branches of production in the town, little or no vitality remained in the old gild merchant; it ceased to have an independent sphere of activity.
But he did more than interpret to his age the significance of man's ultimate theistic beliefs, he gave them vitality by reading them through the consciousness of Jesus Christ.
The vigorous vitality which gives interest to the personality of Catullus, Propertius and Ovid no longer characterizes their successors.
The vitality of the prose literature was not much greater though its complete extinction was from the nature of the case impossible.
It is imperative that cream destined for butter-making should be free from pathogenic organisms.
His writings are marked by vigour and vitality of style, as well as by the highest qualities of the historian who recreates the past from the original sources; he had no sympathy with either legal or historical pedantry; and his death at Grand Canary on the, 9th of December 1906 deprived English law and letters of one of their most scholarly and most inspiring representatives, notable alike for sweetness of character, acuteness in criticism, and wisdom in counsel.
- We have seen that different lines vary in vitality and in longevity, that from the earliest times senescent branches are given off, that different lines vary in the rate of evolution, that extinction is often heralded by symptoms of racial old age, which, however, vary widely in different groups.
When sufficient vitality remains to produce a second generation it shows in increased intensity the feebleness of the preceding.
The movement had the seeds of great vitality in it.
They may be dried so thoroughly that they can easily be reduced to powder yet their vitality is not destroyed but only suspended; on being supplied with water they absorb it rapidly by their general surface and renew their activity.
In this connexion he established the very important practical conclusion that worms which contract the disease during their own life-cycle retain sufficient vitality to feed, develop and spin their cocoon, although the next generation is invariably infected and shows the disease in its most virulent and fatal form.
To make room for these we have to remember that the atomic nucleus has remained entirely undefined and beyond our problem; so that what may occur, say when two molecules come into close relations, is outside physical science - not, however, altogether outside, for we know that when the vital nexus in any portion of matter is dissolved, the atoms will remain, in their number, and their atmospheres, and all inorganic relations, as they were before vitality supervened.
That for any being to retain this intensified vitality the eating of the 9 See illustration in Toy's Ezekiel (Sacred Books of the Old Testament), p. 182.
As to later forms of religion, he appears to have held that they owe their vitality to their embodiment of the deep-seated moral feelings of our common humanity.
Experiments show that pure cultures, when mixed with garden soil constantly moistened short of saturation and kept in the dark at a temperature of 14° C., will retain their vitality for more than ten months; from moist soil kept at 26° C. they die out in about two months; from moist soil at 30° C. in seventeen days; and in dry soil at the same temperature within a week.
These segments, or " proglottides," become detached in groups, and if kept moist retain their powers of movement and vitality for a considerable time.
The system of "compositions" or fines, paid in many cases with the help of kinsmen, finds its natural place in the ancient, tribal period of English history and loses its vitality later on in consequence of the growth of central power and of the scattering of maegths.
The fact that it is possible to propagate these cells of one animal for years in other animals of the same species, without any loss of their vegetative vitality, suggests that this continued growth is kept up by a growth-stimulating substance present in the proper species of animal; this substance, however, has not the power of transforming the normal tissue into a cancerous one.
The vitality of these cells being altered there is imbibition and accumulation of watery fluid in their cytoplasm, causing swelling and vacuolation of the cells.
Recent investigations point to the conclusion that the immediate cause of the arrest of vitality, in the first place, and of its destruction, in the second, is the coagulation of certain substances in the protoplasm, and that the latter contains various coagulable matters, which solidify at different temperatures.