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Updated: June 16, 2025
He, therefore, traced the interchange of light-values in colourless after-images to a 'silent resistance which every vital principle is forced to exhibit when some definite condition is presented to it. Thus, inhalation presupposes exhalation; thus every systole, its diastole.
POLARITY, or action and reaction, we meet in every part of nature; in darkness and light; in heat and cold; in the ebb and flow of waters; in male and female; in the inspiration and expiration of plants and animals; in the equation of quantity and quality in the fluids of the animal body; in the systole and diastole of the heart; in the undulations of fluids, and of sound; in the centrifugal and centripetal gravity; in electricity, galvanism, and chemical affinity.
Every thing that is his, his name, his form, his dress, books and instruments, fancy enhances. Our own thought sounds new and larger from his mouth. Yet the systole and diastole of the heart are not without their analogy in the ebb and flow of love. Friendship, like the immortality of the soul, is too good to be believed.
He knew that the pulsatile force was resident in the walls of the heart and in the arteries, and he knew that the expansion, or diastole, drew blood into its cavities, and that the systole forced blood out.
Suppose the diameter of the artery during its systole to be one line, and that the diameter of the same artery during its diastole is in health is four lines, and in a fever with, great debility only two lines.
For hence all the arteries of that organism draw their life, and on the systole and diastole of the Base, on the contractions and dilatations of its auricles and ventricles, the Army depends for its circulation. To and from the Base come and go in endless tributaries men, horses, supplies, and ordnance. The Base feeds the Army, binds up its wounds, and repairs its wastage.
From these facts it is manifest, in opposition to commonly received opinions, that the diastole of the arteries corresponds with the time of the heart's systole; and that the arteries are filled and distended by the blood forced into them by the contraction of the ventricles; the arteries, therefore, are distended, because they are filled like sacs or bladders, and are not filled because they expand like bellows.
He is in the impregnable position of the body showing all the symptoms of death by lightning shock and nothing else but lightning to account for it a dilated eye, heart contracted in systole, bloodless lungs shrunk to a third the normal weight, and all the rest of it.
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