In fact, the alcohol dye used to dye the skin is also very simple. Pen % fun % Pavilion www.biquge.info

The most common red dye in this time and space is the core of sumac, the extract of which is darker in color than madder, and it can be used for natural silk, wool, linen, cotton and leather printing and dyeing.

It has been widely used as a dye since ancient times, and the Great Song people called it "Su Fang color", and its production method is simpler than that of safflower.

However, in this time and space, Zhang Guoan may be the only one who knows that the hematous extract contains multiple hydroxyl groups, is easily soluble in water, and will show different shades of red at different pH levels.

For example, it interacts with different mordants, such as copper, aluminum, lead, iron, calcium, etc., and can be dyed in different colors, such as crimson, purple red, sauce red, jujube red, ...... Especially on silk, it can show a bright red color.

Even, the hematoxygen extracted from hematoxy can be dyed black with chromium oxide as a mordant, which is called hematoxy black.

Hematoxyl can also be used as a useful medicinal herb.

In fact, it is a plant, even if it is a piece of------ it can be used in medicine.

Zhang Guoan didn't think about this, nor did he want to discuss the theory of traditional Chinese medicine.

But he knew that it would be strange if the Great Song government didn't play monopoly on such a useful thing.

In fact, this is indeed the case, if the usually imported sumu does not pass from them, and then resells it to the people, they will be uncomfortable!

No matter what time and space, from the day the government was established, the first purpose was to collect the people, and this is the basic point of all types of government.

Of course, there is a difference between their second purpose or three or four later.

Therefore, there has never been a government that was built to help the suffering, don't think too well of the Great Song Dynasty government, the Zhao family's taxes are definitely not low.

Zhang Guoan didn't believe that he would make Sumu into a product. The Great Song City Bosi can also see it?!

But you can't sell your own goods, right? If it is all handed over to Wang Quan to do, this leather merchant will definitely play monopoly, so it is better to hand it over to Captain Cai Erlang to do it part-time------

On the 001 ship, Zhang Guoan said to Captain Cai Erlang: "Do you know about the Sumu business? ”

Captain Cai Erlang said: "Very familiar------ but this thing is not cheap in its origin------

Zhang Guoan said: "Can you get its seeds? ”

"Of course you can, but it will take seven or eight years to grow before it can become a mature product."

Zhang Guoan nodded. He knew it was.

Sumu is a small tree that grows up to 6 meters tall and is native to India, Myanmar, Vietnam, the Malay Peninsula and Sri Lanka.

The Great Song people of this time and space did not know that there was still wild distribution in the Jinsha River Valley and the Red River Valley in present-day Yunnan.

But seven or eight years is not a long time, and the seeds of basha wood and sisal, silver gum chrysanthemum and Brazilian rubber tree that he brought with him are now growing very well, except for the silver gum chrysanthemum seeds and Brazilian rubber tree seeds, which will be planted separately on the island at that time, the others are believed to be able to reproduce on the large island of Liuqiu soon.

Of course, the same should be true for suma, eucommia and the like.

But now. Zhang Guoan is reluctant to use sumac as a dye extract, he wants to use the coastal mangrove tree, which is light red and red.

In this way, the key is to need industrial-grade alcohol products, but this is not in a hurry, let's talk about it when we come back from the northern part of Liuqiu Island.

Zhang Guoan said to Captain Cai Erlang: "In this way, in the future, I can give you a product." It is possible to dye leather products specifically and you can go around! ”

Captain Cai Erlang said happily: "Thank you for the gift from Captain Zhang!" ”

"What a gift. It's nothing but agency------"

Within two days they had reached a river that flowed north of the country.

Zhang Guoan saw that a simple wooden trestle bridge had been built on the riverbank, and an area of nearly ten square kilometers of wasteland had been opened, which was very conspicuous on a verdant coastline.

The captain of Mihara Eleven is very capable, so he should be praised.

After getting off the boat, the captain Mihara Juiro ran over quickly. Report to him respectfully.

It turned out that after he had done this, he sent personnel to the upstream area to excavate the sulfur.

He has now learned how to make black fire/medicine, and he knows the importance of this thing, so. If you can mine more, you can mine more sulfur.

That's pretty good.

Zhang Guoan pointed to the several slab houses they had built and said, "Are there any casualties?" How about food and accommodation? ”

Captain Mihara Juiro said that two were burned, and three were hit by miasma and were about to be sent back to the mouth of the Hachido River.

Zhang Guoan ordered to be sent back to the medical security ship for treatment immediately, and the others have now begun to work.

Zhang Guoan looked at the river in front of him, he knew that the location of this river was different from the freshwater river of the world, but the location of the sulfur mines and some small coal mines in the upper reaches of the river should not change, and it would be enough to lead people to dig when the time came.

The toiling crowd is divided into two groups, one group is building a prefabricated house.

They processed the various components of the panel house in advance at the Badaohe Lumber Mill, disassembled and shipped them, and then assembled them now.

As for bricks and tiles, the amount produced in the Badaohe area is not enough.

Zhang Guoan vigorously promoted this kind of panel house also has its own purpose, that is, he wants to forcibly promote his own unit of measurement, and let many carpenters learn to cooperate and learn to use woodworking machine tools.

Previously, all the craftsmen here had a wooden ruler, and the millimeters and centimeters were clearly drawn.

Another reason, of course, is that the wood here is completely white and can be used at his disposal.

Another group of people was shouting slogans, constantly ramming the land near the pier.

They worked in groups of several people, and together they slammed a huge wooden stake on the ground, making a "bang" and "bang" sound.

Zhang Guoan looked at the location of the estuary and felt that a castle-like fort should also be built here, so that two points, one south and one north, could defend the Liuqiu Island.

This time he brought ten and a half sons and a hundred other members of the Wandering Guard.

He summoned Deputy Captain Guo Beyu and said, "In the future, you will be temporarily responsible for the security work here, what do you think?" ”

Deputy Captain Guo Beyu felt that the Badaohe area was still better than here, and he didn't want to stay forever.

He thought for a while, and then said, "Master, I think it's better for everyone to take turns stationing------ I won't be able to control the sea ship yet------

Zhang Guoan also thought about it, this spirit of active learning is very good, and if he wants to encourage, he agreed.

Deputy Captain Guo Beyu looked at Zhang Guoan's face, and said: "The two teams can just take advantage of the offshore waters of this Liuqiu coast and slowly practice maneuvering sea boats!" ”

Zhang Guoan touched his chin and thought about it, and said, "I can also make life jackets for you, and when that basha wood is ready------ you will have to go to the ocean sooner or later." ”

Zhang Guoan then patted him on the shoulder and praised: "You are very thoughtful, very good!" ”

Deputy Captain Guo Beyu smiled with satisfaction. (To be continued.) )