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CONTRACEPTION

been handled in an open and scientific manner.

The form in which the chemical intended as a spermaticide is introduced into the vagina varies; most of the important ways are tabulated below with a few notes about each.

(11) Quinine compounds in a variety of forms.

Of all the chemical substances used as spermaticides, undoubtedly quinine is in the most general use. It is applied in a variety of ways.

(11a) Quinine as a powder.

The injection of powdered quinine compounds is not very generally favoured owing to the difficulty of distributing it suitably in the vagina, although it can be used, and is injected with a special form of syringe. It is used in this form particularly when combined with a sponge, the powdered quinine being well rubbed into the sponge.

Incorporated with some other substances, particularly in the form of a small soluble pessary, it is so much more practical and convenient that there seems no reason why the powder should be used at all, except by those who dislike the grease of the pessary.

Owing to the difficulty of inserting the

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