TRANSLATED FROM THE FRENCH, BY A. R. MACDONOUGH, BloodVitals SPO2 device ESQ. IN all ages probably the most different opinions as to the seat and the precept of life have been expressed; but, the systems bequeathed to us by the ancients on this topic comprise a normal perception, simple sufficient to be very widely shared, and seemingly nicely based enough to endure for centuries. One reality of commonest commentary death resulting from haemorrhage gave rise to the notion that life dwells solely within the blood. Homer's heroes breathed out their souls with their blood; among the Hebrews, as among the Greeks, offering the sacrifice of a life, and shedding the blood of a victim, had been equivalent expressions. From Galen to Harvey, men of science supposed that the guts only sends out the fluid of the blood from the centre to the floor. In their theories, the blood was incessantly formed and renewed within the liver, and was impelled by centrifugal force into the veins and arteries alike.

Harvey first demonstrated that the blood returned in its course. The concept of the transfusion of blood takes its starting-level from the discovery of Harvey. As soon because it was identified that the blood can return to the center, and be taken up again by the vessels, what was extra natural than to hunt to introduce it right into a diseased physique? Is not the blood nonetheless considered the only real principle of life, BloodVitals SPO2 device because it was in the early ages of medication? And, since it can be transfused in type, we shall be in a position to revive well being, to heal disorders, perhaps, even to lengthen life. In a second of pleasure the human thoughts believes it has penetrated the secret of life, and supposes that henceforward will probably be its grasp. Probably the most well-known alchemists of the center ages by no means surrendered themselves to hopes so wild. Besides, the sixteenth and seventeenth centuries saw the delivery of so many discoveries in natural sciences, that nothing seemed inconceivable.

The schools of medication enter with feverish ardor on these questions, so full of promise; but, amid the sunshine that bursts upon them, they typically neglect that extreme statement of information which led to the invention of the circulation. Physicians of that day trouble themselves very little with inquiries whether the historical notions in regards to the blood are true or false; they accept them with out reserve, and publish them abroad with these forms of dialogue and those obsolete ideas which brought upon them the well-deserved ridicule of our satirists. Medicine and physiology in that period have been treated underneath the form of philosophic argument, science and imagination were blended, and "reasoning banished cause." The history of transfusion, at its starting, seems like an necessary but empirical discovery; new expertise rests merely on scholastic discussions, the true mingles with the false, and, after the spectacle of a barren contest offered by detractors and lovers, transfusion was proscribed, and doomed to oblivion; and will probably be lengthy earlier than its recovery, for the true scientific methodology has not yet been found.

In the final half-century we've got returned to the method of observation; nor is that technique now, as it was in Harvey's time, the privilege of a few savants; it has develop into the information of all men of science in our day, and the true cause of scientific progress. Amid the overall development of the sciences, transfusion has come up once extra, remodeled and widened; it is not going to satisfy the extravagant hopes indulged at first, but it'll throw a broad light on the issue of well being and illness. The ideas on which this grand expertise now rests are effectively settled-the features of the blood have been clearly decided. We know that life dwells in every fragment of our being; the mass of nerves, the flesh of our muscles, the tissue of our glands, want the indispensable help of the blood, yet dwell by themselves. If basic anatomy has followed out the work of Bichat, in studying the weather of lifeless Nature, physiology has realized Haller's conception, in analyzing the features of these elements.

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