Page:On an inversion of ideas as to the structure of the universe.djvu/44

 to bring the bag into communication with a pressure-gauge, when the mercury shows that the pressure in the bag is only half of that of the atmosphere outside the bag.



. 13.

Had the pinch been greater a vacuum would have been caused within the bag by the expansion of the interstices. As it is, however, the bag has maintained its rigidity. Then, if the pressure-gauge is closed and the neck opened, so that water may be drawn in, the