Blood-Vessels.  --on the next lap we have a graphic illustration of the internal arrangements of the blood-vessels of the lungs and bronchial tubes.  The pulmonary artery, arising from the right ventricle of the heart, conveys the venous blood to the lungs.  It penetrates the lungs and divides and subdivides into branches, which accompanied the bronchial tubes and terminate in a dense capillary net-work upon the walls of their cells, where the blood undergoes that magical change, giving up its poisonous qualities and becoming revivified and healthful.

_______________ Note the use of the word 'net-work', obviously an early predecessor to the very common word network.  I found this little nugget of gold to be very interesting as networks are so synonymous in today's world and speech, and found it very amusing to find an example of the early use of the word before it had truly come together into its modern-day form, which even today is now abbreviated to a more common usage of "net,"  I guess we take the "work" in network for granted these days. :-) For more on the entymology of the word Network see http://www.etymonline.com/index.php?search=network&searchmode=none

Additional Articles from the Book of Medicine:

• Delicacy of the Organs
  
  

  Again this next section has a title that doesn’t sound like something you’d find in a medical textbook. If I were to read this title is where I would think I was preparing to read a book about Hannibal Lecter. In fact maybe it was medical textbooks like this that inspired some evil doctor to become a cannibal somewhere.
  

  Delicacy of the Organs. –the protection of the organs which carry on the stupendous office challenges our warmest admiration. So delicately are they arranged that the slightest pressure will cause intense pain, yet tons of air surged to and fro through their intricate passages, and bathe their innumerable cells without our knowledge, so to speak, of its coming and going. We annually perform over 8,400,000 acts of breathing, inhale over 150,000 feet of air, and purify nearly 4000 tons of blood! This gigantic and unburdensome process goes on constantly, never wearying or worrying us when in robust health, we are struck dumb founded with amazement when the cold calculations of science reveal to us its magnitude and marvelousness.

  _____________________
  So it does appear that the title for this action was completely inept. The section actually is a off topic. It jumps from the concept that our organs are designed with sensors to indicate pain when the organs or threaten, and then jumped into the statistics section talking about just how much the organs process. Nothing in this section talked about how fragile the organs might be, and much to the chagrin of many cannibalistic psychologists, there is no talk about how to cook up a meal.

• How is Malaria carried by the Mosquito
  
  

  How is malaria carried by the mosquito?-best imagined that a man has returned from some malarial country takes up his abode in a healthy, yet mosquito infested village.  This man may be fairly over his attack yet he still suffers from an occasional chill with fever.  He has no screens in his house, nor have his neighbors, unless previously told to follow such cautions.  A female as Cato are several attack in and stuck his blood which contains these tiny parasites.  The mosquito takes millions of the little parasites which then undergo a development in the body of the insect and can be seen microscopically in the stomach and intestine, and the small glands in its mouth, which secrete saliva.  Now let us follow the mosquito and see what harm it can cause any community.  It flies through a screen door or window and lights on the arm, etc., of an unsuspecting neighbor.  Inviting a person the mosquito ejects or gives off its saliva into the womb to eight in diluting the blood of a person which it has been, as the blood is too thick to be sucked up to the tiny tube in the bill (proboscis) of the mosquito.  In this way the bite of the female mosquito whose body contains a small animal error sites which cause malaria, as by means of the saliva into the blood of the person during the act of sucking up the blood.  Does the mosquito sucks up the blood of the individual and in exchange injects into his blood the saliva contains parasites.  These parasites multiply in the blood of the person bitten and produce poisons which give rise to the chills, fever, aching limbs, etc., known as malaria, malarial fever or “odd,” (chills and fever).  It can readily be seen how malaria will spread when individuals in the community have millions of parasites in the blood, and at the same time as Cato’s are carrying around in their bodies, millions of the same living germs which they sought from the blood of the infected person, develop and inject them into the blood of every person they bite.

  You will notice as you read the follow on sections covering Mosquitos and Malaria that the book is big on talking about where they live, but not terribly practical on how to actually deal with the insects.  There are more references to different possible breeding places than there are gears in a Patek Gondolo watch.

• Air and Gases in Water
  
  

  Separating substances from liquids a hundred years ago was still a novel chore and not even as easy as a car insurance comparison is today.

   

  Air and Gases in Water.-A considerable amount of air generally exists in water, and is taken up by the gills of fishes, assisting them to accomplish the proper aeration, or rather oxygenation, of their blood. The air usually mingled with water may be expelled by boiling, but is absorbed again if the boiled water is agitated with access of the atmos­phere.

   

  Now, that particular segment doesn’t make a great deal of sense in the grand sense of things, but it would appear that the author is trying to talk about the purification or the impurities that can be found or removed from water.