These cells consist of an outside bag inclosing an inner sac, and within that sac there is a dot.

Wilkie's Court is a little cul de sac, with about half-a-dozen wretched cottages in it, fronted by a dead wall.

Although they are peculiarly modified to suit the different organs, these cells never lose this peculiar structure; it may be traced even in the long drawn-out cells of the flesh, which are like mere threads, but yet have their outer and inner sac and their dot,at least while forming.

The tubes and chambers of the inner ear enclose and protect a delicate membranous sac of exactly the same shape as themselves.

Little closed sacs, called synovial sacs or bursæ, similarly lined and containing fluid, are also found in special places between two surfaces where much motion is required.

The cystic duct leads back to the under surface of the liver, where it expands into a sac capable of holding about two ounces of fluid, and is known as the gall bladder.

By true channels is meant those passages that led from the open water quite up to the crater, or which admitted the passage of vessels, or boats: while the false were culs de sac, through which there were no real passages.

Here in each lid is a little reddish elevation, or lacrymal caruncle, in which is an opening, communicating with a small canal in the lid which joins the lacrymal sac, lodged between the orbit and the bridge of the nose (Fig. 137).

The yeast plant is a mere sac, or "cell," containing a semi-fluid matter, and Schwann's microscopic analysis resolved all living organisms, in the long run, into an aggregation of such sacs or cells, variously modified; and tended to show, that all, whatever their ultimate complication, begin their existence in the condition of such simple cells.

Examined by the microscope, the fat cells consist of a number of minute sacs of exceedingly delicate, structureless membrane filled with oil.

The heart is thus covered by the pericardial sac, but is not contained inside its cavity.

It was a close, pestilent, little cul de sac, shut in by a dead brick wall at the far end.

"Peste!" exclaimed Raoul Yvard, as soon as he had gazed a minute at the stranger in silence; "a pretty cul de sac are we in, if that gentleman should happen to be an Englishman!

The serous membranes form shut sacs, of which one portion is applied to the walls of the cavity which it lines; the other is reflected over the surface of the organ or organs contained in the cavity.

The spores arise from special or mother-cells by a process of division, or it may be even termed free-cell formation, the protoplasm of each mother-cell dividing into four parts, each of which contracts, secretes a wall, and thus by rejuvenescence becomes a spore, and by the absorption of the mother-cells the spores lie loose in the spore sac.

The name of Chlamydomonas is applied to certain microscopic green bodies, each of which consists of a protoplasmic central substance invested by a structureless sac.

A, diagrammatic representation of the ending of a bronchial tube in air sacs or alveoli; B, termination of two bronchial tubes in enlargement beset with air sacs (Huxley); C, diagrammatic view of an air sac. a lies within sac and points to epithelium lining wall; b, partition between two adjacent sacs, in which run capillaries; c, elastic connective tissue (Huxley).

This inflated membrane should be a vocal sac, I think, but I hear no sound.

It forms a blind sac above the level of the mouth.

* 61 a jar' chal' ice a thwart' rap' tur ous sward ter' race jew' eled ci bo' ri um por' tal vil' lain au da' cious sac ri le' gious LEGEND OF THE WAXEN CIBORIUM.

The ends of the branches dilate and become closed sacs, which eventually drop off as spores.

The tubes and chambers of the inner ear enclose and protect a delicate membranous sac of exactly the same shape as themselves.

These lie parallel in the medullary or central structure, but On reaching the cortical or outer layer, they wind about and interlace, ending, at last, in dilated closed sacs called Malpighian capsules.

But discovery sometimes makes a long halt; and it is only a few years since Mr. Carruthers determined the plant (or rather one of the plants) which produces these spore-cases, by finding the discoidal sacs still adherent to the leaves of the fossilized cone which produced them.

In a moment more he was lost in a false cul-de-sac, and I found it impossible to trace the other.