As we all know, glass cannot be produced in underground caves by itself. Deep creatures may not be able to make pottery, so these things can only come from people, and they are unlikely to be the original inhabitants of the village.
Craft threw away the small shards of glass, put on gloves and cleaned the ground mixed with dust and gravel, and found larger surviving fragments.
It is roughly the round bottom of a thick cup and bottle, with obvious traces of manual firing. The craftsmanship is not as good as that of Witcham, but after wiping off the dust, you can see that the transparency is relatively good, and the light can easily pass through a distance of more than one finger thick and project.
Irregular spots caused by uneven melting.
Take off the scabbard of the sword and use the tip of your head to open the fragments of the large pottery bottle. You can see the residue between yellowish brown and reddish brown attached to the inner wall.
Twisting a handful, he found in it the smell of old metal products that had lost their maintenance oil film. They had been left wet for too long due to improper handling, and had become scrapped.
The attachments, like slightly moist flour, cracked and fell off under gentle pressure, and scattered into dust-like substances. Some of them were inevitably inhaled into the nasal cavity, and the smell of blood and rust still contained a slightly sour smell.
The uneven particles appear to be common rocks, and such slag deposits appear after the calcination of unclean minerals.
"Rust powder?" Forced by Kraft's threatening gaze, William did not take another bite, but this did not prevent him from understanding what it was. It was often rubbed on old iron parts in the cabin.
The captain had no idea why the rust was ground into powder, but the rust powder reminded him where he had seen these green minerals before. "I remembered, I have seen these green things before, but they don't look like this."
, it was ground into powder and added to the ink. Someone gave it to me for drawing parchment charts."
"You actually recognize it?"
"It tastes quite special, a bit like rust and red iron ore." William smacked his lips in recollection. Perhaps because of the instinct to be wary of injury, this peculiar taste of blood, which is close to biting his lip, is easy to remember.
"Do you have any idea?"
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Kraft is using his meager knowledge of chemistry to analyze the pile of debris in front of him. Unfortunately, due to the change in the exam pattern that year, this alien soul has not had any further study in this area. Medical chemistry has also been passed down at a low altitude, and the level is about the same as that of middle school.
era.
Fortunately, it's not too barren. I can roughly guess that it is some kind of iron salt. It is suspected that it will turn into rust after being calcined. Oh no, he meant iron oxide.
"I have two pieces of news."
"One good and one bad again?" William showed quite good acceptance ability, or in other words, compared to what he had experienced before, this was nothing. "I don't want to choose, just pick one."
"We are in the alchemist's mine." Kraft picked up a green crystal block separated from the original stone. It was roughly broken from the root and stacked next to the device for access. "We figured it out.
The target is not a unique and rare mineral, it has even been used in ink for a long time."
The green crystal appearance is 80% ferrous ions. Considering that the product is sulfuric acid, which contains sulfur anions, a few water may be added to create the crystals.
The eucalyptus is broken, it seems to be the primitive carbonization method, and the heating product is collected to obtain sulfuric acid.
Congratulations to this talented amateur chemist who went to remote mountains and remote areas and discovered a beautiful mineral that had been discovered before. Under the guidance of "refining the essence of the ore", he accidentally discovered the retorting method and finally created sulfuric acid.
Killed myself.
Out of confidentiality, or because he really didn't know that this kind of thing was available in other places, but only used it in very small amounts and was supplied as powder, he insisted on mining in a human and geographical environment that was almost completely isolated from the outside world.
This makes it extremely difficult for news to spread out. Under the circumstances of strict control of key manpower, it is not easy to reverse the source from the outside in, which directly leads to the demise of technology and people.
Originally, this long-dead invention would have been buried underground forever along with its inventor and the terrible reason for its disappearance, until one day someone got bored and threw some kind of ink raw material into a retort bottle to play with.
As a result, a smart guy dug out clues from a cerebral infarction patient, brought people all the way here, and got together with the last wave of bad luck in this accident after several years.
It feels like the treasure map I found after all the hard work points to the crooked neck tree at the entrance of my village.
"We don't need to take risks to develop this mine. We just need to go back and ask where this kind of thing is produced. It's incredibly simple."
William was stunned for a moment. The green light that was worthless just a few minutes ago seemed to be changing color, and was coated with a bright golden edge. "You just said there are two pieces of news, what about the bad news?"
"That was bad news just now."
"Um?"
"We are in the mine where alchemists dig out raw materials." Kraft reiterated this fact, stuffed the crystal into his pocket, and walked forward with a torch. "I hope you still remember what happened in this mine, or
Would it be better to call it 'Old Mine' to evoke memories?"
They crossed over pottery shards and glass shards, and stepped over broken-handled mining picks. Chisel marks appeared on the cave walls. William quickly realized what their biggest trouble was now.
"Collapse..."
In the area with the highest concentration of mining traces, the entire area collapsed and was jammed with rocks. The arrival of the cave builders was not the direct cause of killing the miners, but it dealt a fatal blow to the weak structure.
On the huge rock blocking the way, the gouge marks gathered into several small pits, and a rusty iron pickaxe with its head broken off was discarded next to it.
"Can you go back and try another way?"
Kraft shook his head slowly and lit the remaining torches. He had prepared a lot when he came, but he couldn't bear the consumption. "I'm afraid there is no time to find a second way."
"Just a little bit, just a little bit worse?" William pushed the stone hard and was shaken back a few steps by the reaction force. The rock didn't move at all. After walking such a long way and escaping from the mouth of such an evil thing, he was looking for something.
In the treasure, the last step was blocked at the exit?
Now the distance from the outside world is probably only a few dozen steps. The collapsed rocks have turned this section of the road into a natural chasm. This is a distance that is absolutely impossible to dig through with human power.
"Are those things going to have two more faces?" Repeated hopes and despair hit the captain alternately. Now they are probably at the end of their rope. No matter how brilliant Kraft's "magic" is, it can only take them through different levels. There is no way
Create a way out of thin air.
Kraft was silent. If he was unwilling to do so, he was much more unwilling than William. Compared with his desire to go out and tell stories, he still had the unfinished content of less than half a man's height, and did not want to interact with arthropods in the deeper levels.
A long-shelled worm as a companion.
But this is really not a problem he can solve. Unless he can create a shield machine, how can he dig through a rock formation that is at least ten meters thick?
"There's not even a single bone here. They must have all been dragged away by those things..." William picked out a long stone with some weight and tried to swing it. It seemed that he was planning to make a last ditch effort to die.
Be dignified.
It makes sense. Along the way, we only saw alchemy equipment and mining pickaxes. Combined with the distinctive faces of the local people that emerged, it is not difficult to guess the whereabouts of the victims.
【Shield boring machine?】
Kraft touched his chin, activated his thinking and found a somewhat dangerous inspiration, and realized that this matter was not entirely a daydream.