the hypogastric plexus in the female, vibrating on to the air like some intense wireless message. And there is immediate response from the sacral ganglion in some male. And then sight and day-consciousness begin to fade. In the lower animals apparently any male can receive the vibration of any female: and if need be, even across long distances of space. But the higher the development the more individual the attunement. Every wireless station can only receive those messages which are in its own vibration key. So with sex in specialized individuals. From the powerful dynamic center the female sends out her dark summons, the intense dark vibration of sex. And according to her nature, she receives her responses from the males. The male enters the magnetic field of the female. He vibrates helplessly in response. There is established at once a dynamic circuit,