The Magical Principles of Natural Philosophy at Hogwarts

The weather is getting colder and colder.

Erwin borrowed the Marauder's Map from the twins and studied it for a few days, and found that his initial judgment was wrong.

The main function of the Marauder's Map seems to be to permanently maintain a large locking spell covering the entire Hogwarts, but the problem is that even the simplest kind of locking spell that can be directly blocked has such a large range and such

Many targets also mean a huge consumption of mana.

Erwin could not find any magic text on the Marauder's Map, which meant that its functionality and magic power reserves were based on its material - this was even more unreasonable, as it was just ordinary parchment no matter how you looked at it.

Unless... there is another host, and the Marauder's Map is just a display.

This should be right. Hogwarts must be hiding a huge secret. Erwin tried it on the first day he came to school. The entire school was shrouded in a huge electromagnetic shielding spell. Now it can be confirmed that it exists.

Locking spell.

Interestingly, the school itself is an amazing magical creation.

So how well do the four makers of the Marauder's Map, Moonface, Prongs, Padfoot and Wormtail, know about this school?

Erwin was suddenly very interested in the true identities of these seniors.

He returned the Marauder's Map to the Weasley brothers. Apart from confirming Principal Dumbledore's movements, he didn't really need it. He just let the Marauder's Map be passed down from generation to generation in the hands of problem students at Hogwarts.

Bar.

Erwin's study progress continues in an orderly manner. As a first-year student at the bottom of the academic ladder, what he should do is to absorb as much knowledge as possible, rather than questioning or thinking about what else is available.

The complexity of medical magic made Erwin realize the importance of defensive spells. If you are not injured, you will not need treatment. The armor spell can protect against general damage, but the biggest shortcoming is that it needs to be actively released. Erwin really wants to

It becomes a permanent passive state, but unfortunately, with his current level of Charms, he doesn't even have a clue.

You still need to learn the basic healing spell. Although it has great limitations, it can indeed quickly treat general wounds. There are definitely many places where it needs to be used. But Erwin soon encountered a problem.

How to practice.

The lack of practice objects should be another main reason why Hogwarts does not teach medical spells. Erwin speculated that only St. Mungo's Hospital can provide complete medical training.

Using a cutting spell on yourself and then trying to cure it sounds like a good idea, but torture aside, if you accidentally make a mistake while reciting the spell, you will still be the one to suffer.

After thinking about it, Erwin decided to find a professional. He ran to the school infirmary and asked Madam Pomfrey if she had suitable teaching aids for practice.

Madam Pomfrey was surprised that a first-year student had such a request. She refused Erwin's application to participate in the treatment of other students without hesitation, and then gave a very professional suggestion: go to Hagrid and ask for a chicken.

.

Chicken? Erwin didn't react for a moment.

"All the animals used to practice spells at Hogwarts are provided by Hagrid." Madam Pomfrey said as she applied ointment to a boy with burns and blisters on his face, causing him to scream in pain.

Many people looked down upon the half-giant gamekeeper, but they didn't know how much he quietly contributed to Hogwarts.

Erwin and Hagrid still had some friendship, although it was limited to greetings during morning jogs, but Hagrid was very enthusiastic and immediately caught a majestic rooster from the chicken coop after learning of Erwin's request.

"Do you need me to prepare a chicken coop for you?" Hagrid asked. The rooster he was holding with both paws was like a sparrow in his hands.

"No need, I'll just practice the spell here." Erwin said quickly: "And I won't hurt its life... I should."

So in the next few days, Erwin would come to Hagrid every evening, find a chicken to practice the healing spell, and then have dinner with Hagrid. The main course was the chicken that died from the cutting curse.

Hagrid could only talk to his hunting dog named Fang most of the time, so he was happy to have someone willing to chat with him, even if the other person was just a child. He and Erwin talked a lot about his work, his

Life, his pet. Not only does he have to keep the keys to Hogwarts, but he also raises many magical creatures in the Forbidden Forest.

He mentioned that he was expelled from Hogwarts when he was twelve years old and stayed to work here, but did not want to go into details.

Erwin discovered that Hagrid had a pure heart beneath his rough appearance. He estimated that the half-giant's mental age was probably no more than fifteen years old. This was indeed a bit strange, perhaps related to his past experiences.

Such people can be trusted, but their work may not be reliable.

During this period, Erwin also met Harry, Ron and Hermione. The three-person team were not to mention how surprised they were when they saw him in Hagrid's hut.

On the fourth day, Erwin successfully eliminated the incision on a hen. To be on the safe side, he used a cutting spell to open its breast again and then healed it.

This hen escaped the tragic fate of bleeding to death and then being turned into a roast chicken, and Erwin was really relieved. He felt a little nauseous just looking at the muscles.

"Learned?" Hagrid was also very happy, "I just need your help. Do you remember Buckbeak?"

Erwin nodded. Hagrid had talked about the hippogriff he raised. This animal is somewhat similar to a griffin, but one has the torso of a horse and the other the torso of a big cat.

"It's almost the mating season for hippogriffs. I found a mate for Buckbeak, a female hippogriff named Urula, and wanted to see if we could have a litter of cubs." Hagrid

He scratched his head and looked a little embarrassed, "But Urula has a bad temper, and Buckbeak was scratched when he was getting close to her yesterday."

"Well, Hagrid, the healing spell can only be used to treat relatively simple injuries."

"Buckbeak just suffered a flesh wound. I applied some medicine to him, but it didn't work well. He kept trying to rub it off."

"Then let me try."

"Thank you so much." Hagrid smiled happily.

He took Erwin to a clearing in the Forbidden Forest, where a huge creature was tied up. Buckbeak looked quite agitated, and the sharp claws on its feet proved that it was quite dangerous.

"Bow to him so that you can get close to him." Hagrid said to Erwin in a low voice.

Ignoring the advice of professionals was obviously not a wise move, so Erwin did it.

Hagrid made a coaxing sound, walked over and put his arms around Buckbeak's neck to comfort him. At the same time, he pointed out to Erwin the injured part of the animal, which was on the inside of the hind leg.

It's such an embarrassing part. If it's not cured as soon as possible, a litter of winged beast cubs will only exist in Hagrid's dreams.

With the constant vigilance of being kicked, Erwin knelt down and looked at the wound. It was indeed just a laceration. He pointed his wand at the wound and said, "It healed as before."

The wound wound began to heal, and new muscles and skin were rapidly formed to fill the wound. This spell is still universal and can work on most creatures.

Buckbeak's body trembled and he let out a short cry.

"You're completely fine, baby." Hagrid rubbed its head.

Buckbeak turned around, put his big head close to Erwin and rubbed it. Erwin also stroked its feathers. He liked small animals quite a lot, although the one in front of him was a smaller one than Hagrid.

small animals.

Farewell to Hagrid, Erwin had a premonition when he left that he might be treated as a full-time veterinarian by Hagrid in the future.

Harry Potter must learn this spell as soon as possible, he reminded himself.

It will be Christmas in a week. It has snowed for three or four days in a row and the temperature has become very low.

Sabi brought a large package to Erwin, which contained three custom-made fire dragon leather vests. They had a very good thermal insulation effect, but they could not completely protect against the severe cold.

So Erwin needs to make certain changes to it.

The three runes of Phifer, Turisaz, and Karnaz can form a stable sequence. Erwin engraved them on the inner lining of the fire dragon leather vest, and then applied the refined primary plastic potion on it.

Finally, apply a constant temperature spell and let the magic pattern array keep the spell constant.

So a simple magic item was born. Erwin currently only has the ability to make this kind of thing. This vest is enough to allow him to maintain his body temperature in the Forbidden Forest without having to wear a heavy cloak. And it is relatively

Compared with constantly using thermostat on yourself, the magic power consumed by the dragon skin vest can be said to be very small. This is the value of magic items.

If the constant armor spell is on the vest, it will be a very good piece of armor.

Magic potion and magic engraving actually belong to alchemy in a broad sense, and the two complement each other to a certain extent. With the development of magic society today, there is already a relatively mature process, but this requires very high requirements for magic perception and control.

The magic text course at Hogwarts does not begin to teach specific magic item production until the seventh grade, and this elective course can only be taken in the third grade.

For those who are truly talented, the progress of regular courses is too slow. Erwin also tried to audit the Magic Text course, but to be honest, the results were very low, and most of them were about grammar and document translation.

The professors of each subject are responsible for the entire school's curriculum, so Erwin has no reason to ask Professor Basilica to teach him individually like Professor Flitwick. Self-study is his best option.

Such a constant-temperature fire dragon leather vest can be sold for twenty-five Galleons. Although it is expensive, considering the cost of materials and the lower price of the purchaser, the proceeds from the sale may be less than five gold coins. It is completely worthless for Erwin's energy consumption. After all,

The added value of primary magic items is relatively low and the goods are not scarce enough to become a way to make money.

Erwin certainly didn't want to make pocket money through this. He wore a thermostatic vest for himself and another for Neville. After all, the Forbidden Forest was not as warm as spring in a classroom with a magic fireplace. They were practicing configuring magic.

Yao always has to find a way to keep himself from freezing.

As for the last one, Erwin gave it to Hermione.

Seeing Miss Nutria's surprised look, Erwin shrugged, "Don't get me wrong, I just can't bear to see you shivering in the cold outside, so just think of it as an early Christmas gift."