Jin imagined that it was a decision made because it would not make sense to claim a barren land.
"But ...... umm ......."
Jin was concerned about the condition of the <>.
However, since he had no expertise in this area, he decided to just take a sample.
He formed a rock he found around there into a suitable container and filled it with soil.
"Reiko, load them into the hurricane."
"Yes, father. ...... Hope!"
Yes, ma'am.
Reiko, not wanting to leave Jin's side even for a moment, called Hope and handed her a soil sample.
Jin then said,
"Well then, Mister Mihoyasu, shall we go home?
but she refused and turned the Hurricane to the north a little.
Then he checks the mountain below.
"Hmm, I knew it. ......"
"Jin-dono, is that mountain something?"
No, it used to be a volcano.
A volcano?
There are no active volcanoes in Arus at this time.
Horai Island barely corresponds to it, but its existence was unknown except to Jin's friends.
"If it is a volcano, the soil at the foot of it is volcanic ash soil or ......"
Jin had heard that the soil was not suitable for growing crops, and he had been wondering if that was the case.
And then he wondered further.
"If it works well, I think it can be at least plastered with concrete ...... or not."
Jin hoped that he could make the concrete he had heard a little about ...... used in ancient Rome, which is said to have been made by mixing volcanic ash.
The durability of this concrete is outstanding, as evidenced by the fact that the Colosseum has survived to the present day.
However, Jin's knowledge is based on what he has heard, and he is not sure if he can reproduce it immediately.
Therefore, he intends to obtain samples and conduct experiments on Horai Island.
And <>.
This is a mixture of lime (calcium hydroxide), glue, and hemp (fibrous material), kneaded with water.
The calcium hydroxide absorbs carbon dioxide from the air and slowly hardens into calcium carbonate.
In Japan, where limestone is abundant, this type of plaster was often used for walls in Japanese architecture.
Some people believe that the word "plaster" is a corruption of "sessekai".
* * * * *
After Jin sent Minister of Industry Jinzuo Mihoyas to the capital city of Kuonare by <>, he returned to Horai Island once more via the eastern outskirts of the road, under the pretense of bringing back the golem.
"That's what ...... means."
Jin consulted Saki, who was on Horai Island.
"I see. So you want me to find out if I can use this volcanic ash soil to make building materials, is that it?"
"That's right. I know you're busy, but could you do it for me?
"Of course. Of course. How could I not do something as interesting as this?
Saki smiled and accepted the offer.
"Speaking of busy, you're busy too, aren't you, Jin?
"Well, yes. But with the old man and Makina around, it's still good.
"Well, let's try not to overwork each other, shall we?
"Yeah, I guess so."
Jin and Saki went to their respective workshops to fulfill their roles.