...earnest attention. " I believe I ought first to tell you, that one great purpose of the circulate tion of the blood, is to convey nourishment to every part...fluid, conveyed by the arteries to the ends of the fingers, must be returned to the heart; for on its unceasing circulation our health depends. In order...

...the foot. There are two kinds of blood-vessels in the human body ; arteries and veins. The arteries carry the blood from the heart to the extremities of the body, where they fire connected with the veins, which bring it bacla An artery pulsates or beats; a vein...

...them, and convey the water into private houses. So far the resemblance is complete. These water pipes represent the arteries which carry the blood from...to the extremities of the body ; but in the human body another contrivance was necessary. The citizens of London may use the water or waste it as they...

...foot. There are two kinds of large blood-vessels in the human body : arteries and veins. The arteries carry the blood from the heart to the extremities of the body, where they are connected through the capillaries with the veins which bring it back again. An artery...

...pipes issue from the branch pipes, and convey the water into private houses. These water-pipes may represent the arteries which carry the blood from...heart to the extremities of the body. But in the human body another contrivance was necessary. The citizens of London may use the water or waste it as they...

...streets and alleys, while still smaller ones issue from them, and convey the water into private houses. So far the resemblance is complete. These water-pipes...to the extremities of the body ; but in the human body another contrivance was necessary. The citizens of a city may use the water or waste it as they...