Li Lunming was the top surgical expert in the Ming Dynasty, and his skills were superb.
After listening to Zhao Hao's introduction of the slice preparation method, he used a special knife to cut the snail meat into slices as thin as cicada wings, placed them firmly on a glass slide, and then covered them with a precious cover glass.
It's like it's been tested for years and is as steady as an old dog.
Soon, the only thirty slides were used up. In order to ensure the best coverage and accuracy, the thirty slides were from five different snails.
As it turned out, I was lucky enough to find the evil-looking schistosoma larvae on three of the pieces.
This finally made the three doctors believe that there were indeed parasites in the snails.
How to determine whether the larvae are the disease-causing schistosomiasis? Zhao Hao didn't even need to mention the "Koch postulates". The three of them immediately came up with an experimental method.
First, the larvae were grown in a glass culture dish. Then, the adult worms visible to the naked eye were found in the bodies of sick animals. If they were consistent, it would mean that Zhao Hao's conclusion was correct.
The eternal mystery of the cause of schistosomiasis has been completely solved.
This made Zhao Hao secretly sigh that our medical scientists are actually the best. At least in this era, our medicine is much more advanced than that of the West. It's just that our science has not progressed, which has held back the doctors.
He was very much looking forward to seeing where these outstanding medical scientists would take Ming Dynasty medicine with the help of science.
~~
After seeing the disgusting larvae, the three doctors were still not satisfied and asked Zhao Hao what those ubiquitous "little rods" and "little curly hairs" were.
Zhao Hao said in a sad tone: "That's bacteria."
"Bacteria?" Li Shizhen got excited again and quickly drew those strange lines on the paper. "Is it also a kind of microorganism?"
"Not bad." Zhao Hao nodded.
"So... can bacteria also cause disease?" Li Shizhen held the small notebook and looked at Zhao Hao with full curiosity.
Thinking that he could add another chapter to the Compendium of Materia Medica, he felt that his decision to come to Kunshan was the right one.
Zhao Hao felt overwhelmed by the questions and felt that he needed to write "Biology" as soon as possible.
But it’s already a headache for me just to write teaching materials for my students. Oh, if I continue like this, will my hairline move back?
"I'm still a child, I shouldn't shoulder so much..." Young Master Zhao groaned secretly, but could only patiently explain to Li Shizhen and the other two:
"Bacteria are a type of living thing, just like plants and animals. They are everywhere and there are many kinds of them...but they can be roughly divided into three types based on their shapes. The 'little sticks' you see on www.00kxs.com are various bacilli, and the 'little curly hairs' are various spirochetes. In addition, there are various 'cocci'."
"Bacteria are so tiny that they are invisible, but they affect our lives all the time. Without the help of bacteria, we cannot digest food, ferment grain, and so on. But many bacteria can also cause food to rot, wounds to fester, and people and animals to suddenly become sick. Hundreds of diseases such as colds, tuberculosis, plague, etc. are all caused by these harmful bacteria."
Zhao Hao picked up a bottle of alcohol, sucked a drop with a straw, and dropped it on the petri dish, saying: "But there is no need to talk about changing color. This kind of alcohol can kill most bacteria."
"So when we do experiments, we must first take precautions. After the experiment, we must strictly follow the regulations to clean and disinfect. Similarly, strict disinfection must be carried out in hospitals, which can greatly increase the survival rate of patients."
This was another new concept that the three doctors had never heard of. Those serious diseases were actually caused by these tiny things? It was simply unimaginable.
But with the trump card of microscope, they will no longer easily question Zhao Hao.
In the opinion of the three famous doctors, Mr. Zhao must have invented the microscope many years ago and used it to conduct long-term research before he came to this conclusion.
Although people should not blindly believe in authority, it is ridiculous and ignorant to question areas they do not understand without any basis.
"With the help of a microscope, we can naturally verify all this," the three of them said silently.
In fact, at this moment, they already understood that Zhao Hao had opened the door to a new world for themselves and for Ming Dynasty medicine.
The three doctors are full of hope, hoping that this new world can help them solve the mysteries that have troubled them for many years.
There is no need for Zhao Hao to keep them now. They can’t be driven away even with a stick.
So they readily accepted Mr. Zhao's invitation and helped him run the first hospital in the Ming Dynasty.
Of course, Zhao Hao has to provide sufficient support to ensure their research.
This is also what Mr. Zhao hopes to see, and both parties will naturally reach a happy deal.
Only Zhao Shizhen knew that this microscope had only been made for less than half a month, and his uncle had barely even looked at it.
Alas, others invent things for the purpose of exploration, but my uncle seems to do it just to verify how correct his own ideas are.
Hey, what does it mean to be born with knowledge? What does it mean to be Niu Boyi? What does it mean to look like someone who is not ordinary?
You're talking about my uncle...
~~
After leaving Jiangnan Hospital, Zhao Hao rushed to the levee.
Although it was already dark, torches on the embankment lit up the sky, and people were still busy all night.
That was Zhang Jian directing the craftsmen to debug the installed lifting device.
Starting tomorrow, the stones will be delivered continuously. The engineers can only work overtime to avoid affecting the progress of tomorrow's project.
Craftsmen knew how to use the principles of levers and pulleys to lift heavy objects two thousand years ago, and this was explained in detail in the Mo Jing.
The windlass on the well is the most intuitive manifestation.
The lifting device at this time is no different in principle from the water-pumping windlass, except that it can bear more weight and save more labor.
With this thing, the stones in the rattan baskets don’t even need to be unloaded from the ship, they can be directly hung on iron hooks on the deck.
The laborers did not have to go down to the riverside. They could just stand on the embankment and crank the winch to easily lift the two hundred kilograms of stone onto the embankment.
Then they worked together to move the rattan basket to the crane installed on the other side of the earthen embankment, lowered it down the embankment, and landed it directly on the cart on the inside of the embankment.
The laborers could then pull the stones directly to the new embankment ten feet away.
In fact, Zhang Jian also invented a crane that can rotate its head, which can greatly save manpower in dike operations.
Unfortunately, due to the backward level of blacksmiths in Kunshan, they are unable to produce cast iron sleeves and inner shafts that meet the specifications. It would be almost the same if the craftsmen from the Military Equipment Bureau were replaced.
But it is still time-consuming and laborious, and not worth the effort.
Zhao Hao asked Zhang Jian to improve and optimize the existing wooden crane first and just use it for the time being.
Not efficient enough? Then just get a few more, at most just place a pair per mile.
Anyway, there is free labor, and even if the tools are not very good, it will not affect the progress.
This once again proves that cheap and abundant labor is the culprit that hinders the technological progress of the Ming Dynasty.
But Master Zhao was also helpless. The two or three hundred million farmers in the Ming Dynasty needed to eat, and this was the overriding priority.
Are we going to cause the people to rebel by hastily pursuing industrialization and replacing humans with machines?
Therefore, those who keep saying that Mr. Zhao is a capitalist can stop talking.
Capitalists can use machines but never people! Only industrialists like Mr. Zhao who love the country and the people will take the initiative to tie up their own hands and feet for the welfare of the people.
Just thinking about it makes me feel great.
Well, it’s not that he can’t make it.
ps. Second update, please give me monthly votes and recommendation votes!!!