But sea-sickness also partly depends on the irregular pressure of the bowels against the diaphragm, as their inertia or weight varies with the rising and falling of the ship.

Across the wider and outer end of the cone was stretched a membrane or diaphragm about three inches in diameter.

Into the mouth of the bowl, two or three inches from the diaphragm, my host spoke one by one a series of articulate but single sounds, beginning with â, a, aa, au, o, oo, ou, u, y or ei (long), i (short), oi, e, which I afterwards found to be the twelve vowels of their language.

(Showing the dorsal and the ventral tubes.) A, the cranial cavity; B, the cavity of the nose; C, the mouth; D, the alimentary canal represented as a simple straight tube; E, the sympathetic nervous system; F, heart; G, diaphragm; H, stomach; K, end of spinal portion of cerebro-spinal nervous system.

These two cavities are separated by a movable, muscular partition called the diaphragm, or midriff (Figs. 9 and 49).

There was, it is true, the single small instance of the excited noncom. who poked a large, unwholesome-looking automatic pistol into my shrinking diaphragm when he wanted me to get off the running board of a military automobile into which I had climbed, half a minute before, by invitation of the private who steered it.

He breathed Guppy's London particular, the wind was the black easter that pierced the diaphragm of Scrooge's clerk.

They will likewise serve when feathers, wool, wood, metals, mica, and other substances to the thickness of four inches are placed between the diaphragm and the source of vibratory movement.

The real diaphragm may be removed altogether.

It appears thus that the advantage of the iron diaphragm over iron filings reduces itself to presenting in a certain volume a much more considerable number of magnetic molecules to the action of the field.

The iron diaphragm increases the telephonic intensity, but it is by no means indispensable.

"It would seem that our earth and atmosphere," continued the Professor, "and all of the universe, probably, is surcharged with electrical energy that may be readily set in motion through the mechanical vibrations of a sensitive diaphragm much as when one speaks into a telephone.

Then "Hullo!" Quite involuntarily, when I had thought of my portmanteau, I had flung up the left arm (fingers fully extended) and clutched at my diaphragm with my right hand.

Involuntarily I clutched my diaphragm and averted my head (as is the way with them).

A New Zealander is said to speak from his diaphragm, hands clenched at the sides, as the old Maoris used.

The lower end of the pipe was sealed with a diaphragm of tin.

The basis of his telephone was still the disk or diaphragm which would vibrate when the sound-waves of the voice were thrown against it.

In this the diaphragm was a piece of gold-beater's skin, which Bell had selected as most closely resembling the drum in the human ear.

A mouthpiece was arranged to throw the sounds of the voice against the diaphragm, and as the membrane vibrated the bit of iron upon itacting as an armatureinduced currents corresponding to the sound-waves, in the coils of the electro-magnet.

In his transmitter Edison placed tiny bits of carbon in contact with the diaphragm.

As the diaphragm vibrated under the sound-impulses the pressure upon the carbon granules was varied.

An electric current was passed through the carbon particles, whose electrical resistance was varied by the changing pressure from the diaphragm.

Thus a lens of twelve inches focus will require four times the exposure of a six inch, with an equal sized diaphragm, and a quarter inch diaphragm will require four times the exposure of a half inch when used in the same lens.

Thus a lens of twelve inches focus will require four times the exposure of a six inch, with an equal sized diaphragm, and a quarter inch diaphragm will require four times the exposure of a half inch when used in the same lens.

However, it will be near enough for our purpose if you get a sharp image of the sun on a piece of paper, and while you hold lens and paper, get some one to measure the distance from the paper to the diaphragm aperture, or, in the case of a single lens, to the center of the lens.