Marin had the idea of establishing a general hospital early on, but he lacked medical talent. The two Mongolian doctors, Mozhigen and Battle, can already be regarded as miracle doctors in Europe. However, they are only proficient in bruises, orthopaedics (which can be summarized as orthopedics) and veterinary medicine, and are not good at internal medicine, gynecology and pediatrics.

Therefore, even if the two of them taught hundreds of disciples, Marin would not be able to build a hospital based on this. Otherwise, the newly built hospital is afraid that there is only orthopedics, after all, veterinary subjects cannot be listed in human hospitals. German orthopedics? German orthopedics led by Mongolian doctors? Marin feels weird no matter how he thinks about it......

In fact, there is still a surgical boss hidden in Beihai Kingdom, and that is Leonardo da Vinci......

Da Vinci's other surgical skills are definitely not as good as Morrigan and Battle, but Da Vinci's anatomical level is estimated to be at the level of a leader in this era. After all, surgery has not yet risen in this era. Leonardo da Vinci, who had extensive experience in stealing and dissecting corpses, was definitely a pioneer in the field of surgery.

It's just that, because of the canon, Marin can't make Da Vinci's ability public. After all, the desecration of corpses is spurned and contrary to religious rules. For example, Vesalius, a famous pioneer of anatomy in the 16th century, was persecuted by the Holy See. It was also Da Vinci's cleverness, if Da Vinci dared to make his anatomy diagram public, he would definitely not be able to escape the persecution of the church.

Fortunately, Marin was smarter and hugged the Holy See's thigh at the beginning. Even, the current Pope Julius II is Marin's father-in-law. Therefore, Marin felt that he could use this relationship to promote the development of medicine......

To this end, Marin intends to make two preparations - on the one hand, Marin intends to continue to support Leonardo da Vinci's research on autopsies, and even ask law enforcement to provide the bodies of some death row prisoners whose bodies have not been identified; On the other hand, Marin intends to ask the Pope's father-in-law to make some policy relaxation on the issue of dissecting the human body, so as to avoid the lack of light in anatomy. After all, anatomy is meant to be in the hospital. If you can't see the light, how can you treat the patient?

In view of Leonardo da Vinci's superb anatomical ability, Marin decided to find an apprentice for Leonardo da Vinci in order to carry forward the discipline and facilitate surgery.

And after choosing, Marin finally decided to let Morrigan and Battle, two veteran drivers who are good at surgery, learn anatomy from Leonardo da Vinci. After all, it is difficult to find a newcomer to learn this without a foundation, and there are also obstacles to the canon. And Morrigan and Battle are not Christians and don't care about the canons. Moreover, they have a strong foundation in surgery, and they can learn twice as much with half the effort.

Marin then set up a secret anatomical base in the city of Aurich, where Leonardo da Vinci taught Morrigan and Battle. Marin, on the other hand, is responsible for providing unclaimed bodies of death row prisoners as teaching materials......

However, the biggest challenge in conducting autopsies is not the source of the body, but the preservation of the body. After all, there was no formalin in this era......

Marin sighed - it seems that formalin still has to rely on Marlin, a half-baked chemical "master", to provide it......

Formalin is a formaldehyde solution, and formaldehyde is directly oxidized to form formaldehyde by using methanol at a high temperature of six or seven hundred degrees, with water and air, through catalysts such as silver, copper, and vanadium pentoxide. Vanadium pentoxide malin is certainly not available and is not recognized. But silver and bronze, he has an abundance. Therefore, the production process of formaldehyde is relatively simple.

But the difficulty is, how to obtain methanol, the raw material for the preparation of formaldehyde?

In modern times, this is certainly not a problem. Synthesis using hydrogen and carbon monoxide, or large-scale production using natural gas...... However, Marin is not a chemistry major, so naturally he does not understand those preparation methods. Therefore, those low-cost methods, Marlin can't do.

However, Marlin did know a method for preparing methanol, and it was also the earliest method of producing methanol - dry distilled wood......

In the early days, people obtained methanol by dry distillation of wood, and even methanol was called "wood spirit". However, the amount of methanol obtained from dry distillation wood is very small. If you want to prepare it in large quantities, you don't know how much wood it will consume, and the cost is very high.

However, Marin now sits on the endless primeval forests of the Americas, and there is no shortage of timber at all. Therefore, the stupid method of dry distillation wood can also produce methanol.

With methanol, formaldehyde can be made. Then, naturally, the formalin solution that preserves the corpse also has ......

Thinking of the corpse soaked in formalin's solution, Marlin suddenly felt the urge to vomit. Suddenly, Marin admired those who studied medical anatomy, and he wondered, after the anatomy class, would they still be able to eat meat?

For the great god Leonardo da Vinci, Marin is also convinced. Because, Ma Lin saw with his own eyes that after he dissected a corpse, he still ate braised pork very much. And Marin, who was just watching for a while, saw the fat of the braised pork, and always unconsciously remembered the corpse that was dissected by Leonardo da Vinci. Then, Marin covered his mouth and went out to vomit for a long time. When I came back, I saw that a plate of braised pork was all killed by Leonardo da Vinci......

And Morrigan and Battle, when they first learned anatomy with Leonardo da Vinci, were also very uncomfortable, and refused to touch meat for many days.

Only Leonardo da Vinci was surprised—as for it? Now there is a formalin solution made by Marlin, which is much better. I think that when he secretly dissected the corpse in the basement of his villa in Milan, it was a stinking ...... Didn't he come here too?

In this regard, Marin, Mozhigen and Battelle can only express their worship......

Fortunately, Mozhigen and Battle are both old doctors and quickly adapted to it. And Marin, a non-medical person, still can't adapt to this. Simply, he no longer went to Da Vinci's anatomy class, lest he be disgusted again.

Out of curiosity, Marin watched Leonardo da Vinci's anatomy class and didn't eat meat for a whole week. Because, as soon as he saw the meat, he remembered the scene of Leonardo da Vinci's old pervert dissecting the corpse there with his eyes full of light. Then, he couldn't help but go out and vomit a lot......

……

However, at the moment, Marin does not expect Leonardo da Vinci and Morrigan and Battle to raise the level of surgery much. For now, Marin has only one request for them - to have surgery for appendicitis......

Because, appendicitis is a very common condition with a high incidence. In the absence of surgery, the lethality rate is also high. But if there is surgery, it is actually a minor illness. In his previous life, Marin had many classmates who had appendectomy. If it was in ancient times, those classmates estimated that the grass had grown on their graves early......

In order to tell the three people where the appendix was, Marin endured the nausea and went to the secret dissection base again, pointed out the location of the appendix to the three in person, and told them the scope of the removal, lest they not know how to cut the good intestines.

After hearing this, the three medical bosses had their eyes lit up, and they performed appendectomy on several corpses in a row. And Marin had to stay there the whole time to observe and correct because he needed supervision and correction......

Then, Marlin went back and vomited all the bile......