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I've paid for my passage on this rubbishy old water-pusher of yours, and I'll trouble you to keep a civil tongue in your head, or I'll report you to your owners. You are like a railway guard, my man. After you have seen that your passengers have got their proper tickets, it's your duty to " Mr. Cranze's connective remarks broke off here for the time being.
When the spot cannot be seen, it is because the image falls on the blind spot. *Dissection of the Eyeball.*—Procure from the butcher two or three eyeballs obtained from cattle. After separating the fat, connective tissue, and muscle, place them in a shallow vessel and cover with water.
It is estimated to have an area of from 14 to 16 square feet, and to have a thickness which varies from less than one eighth to more than one fourth of an inch. It is thickest on the palms of the hands and the soles of the feet, the places where it is most subject to wear. *The Dermis.*—This is the thicker and heavier of the two layers, and is made up chiefly of connective tissue.
The colony has become an individual by division of labor and the resulting differentiation in structure. But hydra gives us but a poor idea of the coelenterata, to which kingdom it belongs. The higher coelenterata have nearly or quite all the tissues of higher animals muscular, connective, glandular, etc.
Exudation cysts arise from the distension of cavities which are not provided with excretory ducts, such as those in the thyreoid. Implantation cysts are caused by the accidental transference of portions of the epidermis into the underlying connective tissue, as may occur in wounds by needles, awls, forks, or thorns. The implanted epidermis proliferates and forms a small cyst.
The inner coat consists of a delicate lining of flat cells resting upon a thin layer of connective tissue. The inner coat is continuous with the lining of the heart and provides a smooth surface over which the blood glides with little friction. The middle coat consists mainly of non-striated, or involuntary, muscular fibers.
A good idea of the changes which take place while meat is being cooked can be obtained by examining a piece of flesh which has been "cooked to pieces," as the saying goes. In this the muscular fibers may be seen completely separated one from another, showing that the connective tissue has been destroyed.
The reddish muscle found in a piece of beef is a good example of striated muscle. The heart of any animal, of course, shows the heart muscle. *To show the Structure of Striated Muscle.*—Boil a tough piece of beef, as a cut from the neck, until the connective tissue has thoroughly softened.
This coat is quite thin in the veins, but in the arteries it is rather thick and strong. The outer coat is made up of a variety of connective tissue and is also much thicker and stronger in the arteries than in the veins. Marked differences exist between the arteries and the veins, and these vessels are readily distinguished from each other.
The fat is stored for the most part in the connective tissue. When this is done to excess, and the cells become filled with fat, they form the so-called adipose tissue. Most of this tissue is found under the skin, between the muscles, and among the organs occupying the abdominal cavity. If one readily takes on fat, it may also collect in the connective tissue around the heart.
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