In order to shelter from the rain, the westward marching team set up a simple tent on a rocky plateau, and watched the rain fall outside under the shelter of cowhides.

The rain is gradually weakening.

Staying in the tent, the horse whistle seemed to remember something, brought his metal detector, and modified it.

In fact, it is just adding some cowhide as a waterproof.

"Great Chief, what is this?" Looking at the metal detector in the hand of the horse whistle, the nonsense couldn't help but ask.

Whistle: "This is a metal detector. ”

"Metal detector, what's it for?"

“…… Detect metals. ”

"Really?" blinked, and didn't seem to believe it.

"Of course it's true, but it's not very useful, and I'm improving it." ”

As he spoke, he swept the metal detector in front of him, then took out a gold coin and put it over, and swept it again, indicating that the speed of the fan would change.

In 1847, electricity was a foreign existence to the vast majority of the world's population.

At this time, electricity in people's eyes is probably like quantum in people's eyes 1780 years later, basically only existing in all kinds of high-level technology news.

Of course, it can also exist in scams.

"This ...... What's going on? "Nonsense, as an Indian, and I haven't learned much physics from Ma Whistle, I naturally can only be rare and weird.

Du Ji smiled: "This is electromagnetic induction." ”

"Electric ...... Electromagnetic induction, what does it mean? "Nonsense almost didn't understand a word, in the clouds.

"If you have the opportunity to enter a mathematics and science refresher class in the future, you will be able to understand these concepts." Duyan couldn't help but smile and teased, "If you don't enter the mathematics and science advanced class in the future, most of you won't be able to understand it, but you can't say for sure." ”

"Hahaha!" Several people nearby laughed, "Duguan, you don't learn well." ”

"Let the show you one himself." One soldier pulled out a piece of jerky, "Nonsense, do you think this is beef jerky or venison jerky?" ”

"Maybe it's beef jerky, it's also ........." blurted out nonsense, and then realized something and didn't continue.

Everyone burst into laughter.

At this time, Ma Sentry handed the metal detector to Duwei: "Duguan, let this go for you first, you can use it to explore the surroundings when you are fine, and maybe you can find something good." ”

He has already demonstrated and briefly explained metal detectors to some of his students in class, and Duguan is one of them.

So when Duyan took the metal detector from the horse whistle, he looked like an excited student about to take a lab class.

The rain subsided and the sky gradually cleared.

"Let's go ahead." Ma Whistle said.

The westward marching party packed up and continued on the road, heading west toward California.

Along the way, the horse whistle asked some people to play with metal detectors on wheels. People are very interested in this kind of novelty and interesting gadget, and everyone will keep probing around when they get their hands on it.

Although the gold mine has not yet been discovered, it is not without harvest.

While passing through a desert, several bodies were found with a metal detector.

The bodies were buried in the sand, not deep, and the metal objects such as coins on their bodies caused a reaction from the detectors.

Obviously, they were white people who died unexpectedly in the process of westward expansion, and their identities were unknown, so the ownerless property naturally belonged to the westward marching team of Ma Seng.

Moving westward is obviously not an easy task, as evidenced by these corpses.

Fortunately, Ma Whistle and the others were well prepared, but they did not experience any major twists and turns, and the only attrition was caused by a rattlesnake.

After more than two months of trekking, the westward march of the horse whistle finally approached its destination, the northeastern region of California, the city of Sacramento.

Alta California to be exact, Baja California is still in Mexico.

Also, there will be no Sacramento City, only the Sacramento River.

However, based on this river, combined with previous knowledge of the California Gold Rush, the horse whistle can confirm the general location of the city of Sacramento on a map.

As for where the gold mines were found, he remembers a few key words: under the Sierra Nevada, sawmills, rivers.

Since it is under the Sierra Nevada Mountains, it is naturally in the east of Sacramento.

Since it was a gold mine discovered during the construction of a sawmill, there should be a dense forest nearby, plus a river......

Pointing to an area northeast of Sacramento on the map, the horse whistle asked, "Is there a forest near this river?" ”

"Yes, there's a big forest near Coloma." Nonsense.

Ma Sentry nodded, and then asked, "Who has settled or moved here?"

Nonsense: "Mainly Maidu, Mivok...... And the whites of Sutterburg. ”

"Sutterburg?"

"Where John Sartre founded, he was a cunning and murderous fellow!" The nonsense continued, "Many people have been deceived and even enslaved by him. ”

The horse whistle pondered for a moment, then pointed to the map: "Let's take a look here." ”

The place he was referring to was the Coloma area of nonsense.

He was almost certain that Coloma was the location of the gold mine that had ignited the culmination of the westward expansion.

Even if it isn't, it shouldn't be too far off.

The gold mine is just around the corner!

“…… In the Maidu language, koloma means 'beautiful', and the name of the valley that is fed by the Roundhouse River is actually 'Beauty Valley'. Nonsense for the horse whistle introduced.

Ma Sentry looked at the surrounding scene and couldn't help nodding: "The scenery is indeed beautiful." ”

Coloma is blessed with a lush forest, and the clear, unpolluted river flows through the valley, making the nearby woodlands resound.

The scenery is pleasant and the air is very fresh.

"It seems like a good place to build a lumber yard, and if we settle nearby, we're going to need wood from this forest." Ma Whistle said.

Then the people shuttled through the woodland, and after a short time passed a shallow area of the river, and people waded through the water one after another.

Just as everyone was crossing the river, a soldier who was shaking wildly with a metal detector in his hand suddenly let out a surprised voice: "Hey, the detector has responded!" ”

Most people don't pay much attention to this, after all, the probe has reacted more than once along the way, causing people to pick up a lot of broken copper and iron and a few coins.

However, Ma Whistle was keeping an eye on the metal detector almost all the time, after all, this was his primary target.

"Is there anything in the river?" He asked, seemingly just casually, but in fact, he was quite expectant and nervous.

The soldier with the metal detector leaned down and shook the detector again.

The detector's coil is now wrapped in cowhide and can be placed directly into the water.

The soldier watched as the fan changed, then reached out and fished it out of the water, and then in the sunlight shining through the trees, he fished out a golden glitter......