In the XX-th century methods and ways of contraception

In the XX-th century methods and ways of contraception have stepped far forward. In 1933 book Hoke in which are described already 180 various спермицидных substances has been published. During the subsequent controllable researches have been developed defined спермицидные contraceptive means which could be used in the form of powders, tablets or влагалищных balls. Man's condoms from a skin of animals were applied in the ancient world, but a wide circulation have received mainly in first half of XX-th century. There were the rubber condoms which perfection of reliability proceeds till now a little bit later. In the XX-th century beginning, to be exact in 1908, the cervical cap has been developed. Application various внутриматочных means for the purpose of the pregnancy prevention, first of all various balls, was known and in the Far East, in China and Japan. In Japan the wide circulation has received application of silver balls.