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By these horns, enforced by membrane, the thyroid cartilage and through it the whole larynx is attached to and is suspended from the hyoid bone, or tongue-bone. This gives mobility to the larynx and freedom of movement to the neck; and the larynx, while mobile as a whole, furthermore is capable of an infinite number of muscular adjustments and readjustments within itself.
From above down, in front, the order of structures is as follows: Hyoid bone. Membrane. Thyroid cartilage. Membrane. Cricoid cartilage. Trachea. The hyoid bone is not a part of the larynx, but from it the larynx is suspended. The bone itself gives attachment to the muscles of the tongue. The glottis is the chink between the true vocal bands.
If these zoologists see in us nothing more than a mammal with thirty-two vertebrae possessing the hyoid bone and more folds in the hemispheres of the brain than any other animal; if in their opinion no other differences exist in this order than those produced by the influence of climate, on which are founded the nomenclature of fifteen species whose scientific names it is needless to cite, the physiologists ought also to have the right of making species and sub-species in accordance with definite degrees of intelligence and definite conditions of existence, oral and pecuniary.
The supra-hyoid gland lies a little farther back, immediately above the hyoid bone, and receives lymph from the tongue. The sterno-mastoid glands glandulæ concatinatæ form a chain along the posterior edge of the sterno-mastoid muscle, some of them lying beneath the muscle. They are commonly enlarged in secondary syphilis.
The hyoid bone, serving as a medium of attachment for the tongue, may also be considered a portion of the larynx. By means of the extrinsic muscles the larynx is connected with the bones of the chest, neck, and head. While the muscular structure of the vocal organs is thoroughly known, the actions of the laryngeal muscles in tone-production have never been absolutely determined.
Now the nine millions of human creatures which we here refer to present at first sight all the attributes of the human race; they have the hyoid bone, the coracoid process, the acromion, the zygomatic arch. It is therefore permitted for the gentlemen of the Jardin des Plantes to classify them with the bimana; but our Physiology will never admit that women are to be found among them.
Behind the lower jaw we find the hyoid bone at the root of the tongue, also formed from the gill-arches, and a part of the lower arches that have developed as "head-ribs" from the ventral side of the base of the cranium.
Alas! if there are throughout the world multitudes of trades-women who sit all day long between the cradle and the sugar-cask, farmers' wives and daughters who milk the cows, unfortunate women who are employed like beasts of burden in the manufactories, who all day long carry the loaded basket, the hoe and the fish-crate, if unfortunately there exist these common human beings to whom the life of the soul, the benefits of education, the delicious tempests of the heart are an unattainable heaven; and if Nature has decreed that they should have coracoid processes and hyoid bones and thirty-two vertebrae, let them remain for the physiologist classed with the ourang-outang.
View of the Cartilages in front project and form the lages and Ligaments of the "Adam's apple," plainly seen and Larynx. A, hyoid bone; B, thyro-hyoid membrane; C, thyroid cartilage; D, erico-thyroid membrane; E, cricoid cartilage, lateral ligaments seen on each side; F, upper ring of the trachea. The larynx has for a framework two cartilages, the thyroid and the cricoid, one above the other.
Bramann reported a case in which a dermoid cyst of small size was situated over the sternum at the junction of the manubrium with the gladiolus, and a similar cyst in the neck near the left cornu of the hyoid bone. Chitten removed a dermoid from the sternum of a female of thirty-nine, the cyst containing 11 ounces of atheromatous material. In the Museum of St.
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