P. 434, c. 1—The article on physiology needs few explanatory notes.
It is really a series of experiments, and if it be possible to use
the illustrations the subject will be found much more plain and
interesting. Much ingenuity is possible in arranging experiments.
Any specimen, large or small, may be made to contribute valuable
information in regard to the action of the muscles, the circulation of
the blood, and the process of digestion.
P. 435, c. 1—“Căp´il-la-ry,” or “ca-pil´la-ry.” The fine thread-like
end of a vein or artery.
P. 435, c. 1—“Venæ cavæ.” Hollow veins. There are two of these hollow
veins carrying the blood to the heart, although but one aorta or
passage from the heart.
P. 435, c. 1—“Pŭl´mo-na-ry artery.” The artery of the lungs, carrying
blood from the heart to the lungs.
P. 435, c. 2—“Heart.” Ask the butcher for a sheep’s pluck, and the
whole structure of heart, lungs and liver may be studied. By cutting
away the liver and spreading the lungs on the table with the heart
between them, you may soon understand the whole subject. A beef’s heart
will, of course, do as well; or a smaller subject’s, as a rabbit.
P. 435, c. 2—“Osmosis,” ŏs´mō-sis.
P. 436, c. 1—“Oxidation,” ŏx-ī-dā´tion.