A Russian proverb says that "From all old trees proceeds either an owl or a Devil;" and in many countries where a tree becomes old and past bearing, its sterility is attributed to a demon.
The ancients thought that sterility was the result of eating this sinister plant, and that babes at the breast were seized with convulsions if the mother had partaken of it.
In every six childless marriages about one is due tosterility in the husband.
Many conscientious physicians refuse to treat women patients against whom the charge of sterility is made, before subjecting the husbands to thorough examination, and, since eighty per cent.
It causes leucorrhea or a chronic discharge, makes a nervous wreck of the woman, results insterility and frequently in a dangerous operation.
Certain special poisons in the blood cause sterility by producing miscarriage.
But when persistent sterility faces her, the woman seeks medical assistance and her trouble is discovered.
Age may be said to affect the fertility of women inasmuch as sterility is the natural and proper condition before menstruation is established and after menstruation ceases.
Under this heading are all those cases of sterility resulting from imperfect generative organs.
The latter condition is quite a common cause of sterility and is readily amenable to treatment.
Most of the malformations which produce sterilityare impossible to cure.
Walpole talks in unjustifiable language of his "haughty sterility of talents.
As against these instances there are others where, under favorable conditions, complete sterility shortly sets in.
An illustration is the case of the Negro in America, whose failure to increase more rapidly in number is largely attributable to the widespread sterility resulting from venereal infection.
The authority of religion may be invoked, as it is by the Roman Catholic and Mormon churches[127] whose communicants are constantly taught that fecundity is a virtue and voluntary sterility a sin.
Allen has furnished the American profession with a faithful translation of the valuable work of Professor Ultzmann on "Sterility and Impotence.
On page 179 of Darwinism he argues, most ingeniously, that the sterility of hybrids has been actually produced by natural selection to prevent the evils of the intercrossing of allied species.
He expressed his belief that the early death of the embryos is a very frequent cause of sterility in first crosses.
Alleged Sterility of Hybrids Similarly Wallace writes, at the beginning of chapter vii.
Darwin resorted to much ingenious argument in his attempt to explain what he believed to be the almost universal sterility of hybrids, as opposed to mongrels or crosses between varieties.
The plan of campaign adopted by Darwin and Wallace was, firstly, to try to disprove the assertion that the hybrids between different species are always sterile, and secondly, to find a reason for the alleged sterility of these hybrids.
Thus thesterility of hybrids was a zoological bogey which had to be demolished.
The alleged sterility of the hybrids produced by crossing different species has long proved a great stumbling-block to evolutionists.
The hybrid between the fowl and the guinea-fowl is likewise barren, nor has the long domestication of the horse and ass lessened the sterility of the mule.
Divorce forsterility was customary in very early times.
Complete sterilityor miscarriage was thought to be occasioned by evil spirits; a woman thus possessed with a devil came to be looked on as a dangerous being whom it was necessary to exorcise.
The degree of both kinds of infertility varies in the case of different species, and in that of their hybrid progeny, from absolute sterility up to complete fertility.
Sterility is a physiological character, and the specific differences which the theory undertook to account for are morphological; there is no necessary nexus between the two.
The sterility which so generally attends the crossing of two specific forms is to be distinguished as of two kinds, which, although often confounded by naturalists, are in reality quite distinct.
For the sterility may obtain between the two parent species when first crossed, or it may first assert itself in their hybrid progeny.
A with female B, and male B with female A, the degree of sterility often differs greatly in the two cases.
He was disposed to regard the phenomena of differentialsterility as, so to speak, by-products of the process of evolution.
From this extreme degree of sterility we have self-fertilized hybrids producing a greater and greater number of seeds up to perfect fertility.
As to the sterility of hybrids inter se, or with either of the parent forms, information is still wanted.
Darwin considered and rejected the view that the inter-sterility of species could have been the result of natural selection.
Although there is, as a rule, a certain parallelism, there is no fixed relation between the degree of sterility manifested by the parent species when crossed and that which is manifested by their hybrid progeny.
The sterility of the resulting hybrids may differ likewise.
Darwin came to the conclusion that the sterility of crossed species must be due to some principle quite independent of natural selection.
Wallace, on the other hand, has argued that sterility between incipient species may have been increased by natural selection in the same fashion as other favourable variations are supposed to have been accumulated.
The degree ofsterility of first crosses and of hybrids runs, to a certain extent, parallel with the systematic affinity of the forms which are united.
If the food is insufficient, either in quantity or quality, to maintain good physical conditions, or if it is too abundant or too rich, a tendency to sterility and barrenness is alike the result.
Sterility may be due to excessive sexuality in the marriage relation, or it may be due to such ante-nuptial indulgence of the husband as has resulted in a depleted condition of the reproductive organs.
Even where marriage is contracted after twenty-five years of age, the tendency towards sterility is easily perceptible.
Where the natures of both are as God intended, sterilityand barrenness would be alike a great disappointment for either.
You prosecute me; but the surgeons who guarantee sterility get decorated!
Signs of unparalleled destitution are visible in all the mountain zone, and the solitudes of those districts are assuming an indescribable character of sterility and desolation.
These plantations have ameliorated the climate which had doomed to sterility the soil where they are planted.
Starting from the south, the first travellers had to face all the loneliness and sterility of Lake Torrens and the other salt lakes, and it was many years before it was found out that beyond existed good habitable country.
Even the very sterility of the great solitude seems to have been, in its way, a lure to drag men back to encounter it once more.
Nevertheless, in this pretence of existence, surrounded by the frightful sterility of The Desert, glowed the warmth of true hospitality.
This seems to be the only tree which will not surrender to the iron sceptre of Saharan desolation, for it strikes its roots into the sterility itself.
The sterility of the natives may, then, be attributed to the climate.
We believe to be the first who has pointed out the sterility in human cross-breeds.
If it were true that the union of Mulattoes is always unproductive in Jamaica, the fact would have been too evident not to have been long known, for absolute sterility is easily ascertained.
Among the facts quoted to prove the sterility of human cross-breeds, some are of great value: and we shall examine them in the sequel; others have been wrongly interpreted, while some are far from being exact.
Just as little as the sterility of the union between the dog and the fox would enable us to infer the sterility between the wolf and the dog; these conclusions would be as little physiological as the former.
It is, however, necessary to inquire whether the sterility of the Lipplappen depends upon intermixture or upon other causes.
There are other cases where, regardless of favorable conditions of existence, complete sterilitysets in, or the reproductive ability is very slight.
My experiments in the use of glands from animal to animal, led me to believe that if the gland from a goat could be transplanted into the human body this impotency and sterility could be overcome.
Unquestionably I have cured sterility in one woman, and I have utmost faith that it can be cured in any other, so long as all of her organs are not missing.
The above view would remove all difficulties out of the way of evolution, in so far as the sterility of hybrids is concerned.
Therefore the sterility of the present species, when insects are excluded, is not due to the impotence of pollen on the stigma of the same flower.
For instance, the sterility of many animals and plants under changed conditions of life, such as confinement, evidently comes within the same general principle of the sexual system being easily affected by the environment.
This sterility was not due to the injurious effects of the net, for I fertilised five flowers with pollen from an adjoining plant, and these all yielded fine seeds.
Even with the individuals of the same species, the degree of self-sterility varies greatly, as in Reseda.
Small amount of pollen in the anthers of the self-fertilised plants of the later generations, and the sterility of their first-produced flowers.
He enclosed several flowers in bags; and as the buds often dropped off, he attributes the partial sterility of these flowers to the injurious effects of the bags, and not to the exclusion of insects.
What a terrificsterility does a large portion of this the most ill-fated of the great continents present!
But the same elevation, it is remarked, is not accompanied with the same sterility in these parts of the world, as in the temperate zone.
They sympathised with the complacent respectability of Lord Liverpool's character, and knew how to value the safe sterility of his mind.
If the negroes do not run away from the bears and wolves and climate and sterility of Hamilton county, with more anxiety than they ever did from Southern slavery, then we do not understand their character.
It is interesting to note that crime, drunkenness, pauperism or sterility has not resulted from these two hundred years of miscegenation.
The she-ass, and the female mule, therefore, incline to sterility by their over-heat.
The he and she-ass, therefore, both incline to sterility by common and also by different qualities.
Thus their want of fecundity is proved by facts, and we must attribute the sterility of the mules to all the above causes, as they proceed from a mixture of these naturally unprolific species.
Terry's life well shows the sympathetic source of social rebellion and its justification, but it also shows the ultimate sterility of its extreme expression.
It was a revolt from the radical sterility of Terry's philosophy.
As to the sterility of hybrids, that can no longer be insisted upon as absolutely true, nor be practically used as a test between species and varieties, unless we allow that hares and rabbits are of one species.
But, upon his theory he is bound to show how sterility might be acquired, through natural selection or through something else.
He does show that the sterility of crosses is of all degrees; upon which we have only to say, Natura non facit saltum, here any more than elsewhere.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sterility" in a variety of sentences. We hope that you will now be able to make sentences using this word.
