What is "sterility"

Usage examples of "sterility".

There is no more reason to think that species have been specially endowed with various degrees of sterility to prevent them crossing and blending in nature, than to think that trees have been specially endowed with various and somewhat analogous degrees of difficulty in being grafted together in order to prevent them becoming inarched in our forests.

An extensive observation and experience in the treatment of sterility, convinces us that, in the majority of cases, barrenness is due to some form of disease which can be easily remedied.

The Germans abandoned their immense forests to the exercise of hunting, employed in pasturage the most considerable part of their lands, bestowed on the small remainder a rude and careless cultivation, and then accused the scantiness and sterility of a country that refused to maintain the multitude of its inhabitants.

Here, it must be granted, is an individual of a very high and definite and individually complete type, no accident or sport, but, in fact, essential for the type and continuance of the species to which she belongs, and yet, though highly individualized and worthy to represent individuality at its best and highest, the worker-bee, so far from being designed for parenthood, is sterile, and her distinctive characters and utilities are conditional upon her sterility.

Pacific Ocean, faunas of Paley, on no organ formed to give pain Pallas, on the fertility of the wild stocks of domestic animals Paraguay, cattle destroyed by flies Parasites Partridge, dirt on feet Parts greatly developed, variable, degrees of utility of Parus major Passiflora Peaches in United States Pear, grafts of Pelargonium, flowers of, sterility of Peloria Pelvis of women Period, glacial Petrels, habits of Phasianus, fertility of hybrids Pheasant, young, wild Pictet, Prof.

The sufferer from leucorrhea becomes pale and emaciated, the eyes dull and heavy, the functions of the skin, stomach and bowels become deranged, more or less pain in the head is experienced, sometimes accompanied with dizziness, palpitation is common, and, as the disease progresses, the blood becomes impoverished, the feet and ankles are swollen, the mind is apprehensive and melancholy, and very frequently the function of generation is injured, resulting in complete sterility.

I remember the case of Jyotindra Nath Bannerji who had a remedy for sterility from a Sannyasi and he used it with success.

First, in spite of all that was once said about superstition, the Dark Ages and the sterility of Scholasticism, it was in every sense a movement of enlargement, always moving towards greater light and even greater liberty.

Spigelia Marilandica 314 Spinal Column 24 Spinal Cord 25, 90 Spinal Cord, Reflex Action of the 93 Spinal Curvature, Posterior 898 Spinal Nerves 89 Spirit Vapor-bath 362 Spirometer 391, 392 Spleen 44 Sponge Bath 365 Sprains 892 Squaw-root 305 Stapes 110 Static Electrical Machine 629 Sterility 707 Sternum 23 Stethoscope 391 Stimulants 348 Stomach 39, 52 Stomach, Inflammation of the 882, 884 Stomach, Neuralgia of the 885 Stomatitis 553 Stomatitis Materna 554 Stone in the Bladder 838 Stone-pock 442 Stone-root 337 Story of Sexual Abuse 394 Stramonium 344 Striae 31 Stricture of the Urethra 775, 843 Strumous Diathesis 445 Strumous Synovius 453 St.

It is impossible to study the several memoirs and works of those two conscientious and admirable observers, Kolreuter and Gartner, who almost devoted their lives to this subject, without being deeply impressed with the high generality of some degree of sterility.

But in these and in many other cases, Gartner is obliged carefully to count the seeds, in order to show that there is any degree of sterility.

He is as emphatic in his conclusion that some hybrids are perfectly fertile--as fertile as the pure parent-species--as are Kolreuter and Gartner that some degree of sterility between distinct species is a universal law of nature.

Pacific Ocean, faunas of Paley, on no organ formed to give pain Pallas, on the fertility of the wild stocks of domestic animals Paraguay, cattle destroyed by flies Parasites Partridge, dirt on feet Parts greatly developed, variable, degrees of utility of Parus major Passiflora Peaches in United States Pear, grafts of Pelargonium, flowers of, sterility of Peloria Pelvis of women Period, glacial Petrels, habits of Phasianus, fertility of hybrids Pheasant, young, wild Pictet, Prof.

Chapter VIII Hybridism Distinction between the sterility of first crosses and of hybrids -- sterility various in degree, not universal, affected by close interbreeding, removed by domestication -- Laws governing the sterility of hybrids -- sterility not a special endowment, but incidental on other differences -- Causes of the sterility of first crosses and of hybrids -- Parallelism between the effects of changed conditions of life and crossing -- Fertility of varieties when crossed and of their mongrel offspring not universal -- Hybrids and mongrels compared independently of their fertility -- Summary.

On the theory of natural selection the case is especially important, inasmuch as the sterility of hybrids could not possibly be of any advantage to them, and therefore could not have been acquired by the continued preservation of successive profitable degrees of sterility.