Shuri Gojo and Takashi Kazueda didn't expect that this forensic doctor's promise to give an answer an hour later would really be fulfilled.

Glancing at the corpse of Nikaido, they really couldn't see any evidence that could identify the murderer, and the more suspicious they were, the more curious they were about Ogata's next inference.

"I've read Mr. Ogata's name in the newspapers. As one of Japan's leading forensic doctors, I really wanted to see the difference between the way forensics and detectives solve crimes. Rokuta Shoji stood at Pang with great skill and spoke.

Ogata nodded, as the focus of everyone's eyes: "Before the autopsy report, I would like to tell you. The two most painful ways to die in the world are drowning and burning. Even if your flesh is cut off piece by piece, it will not be able to achieve the pain of these two ways of death. ”

Everyone looked at the dead Nikaido Yuji, his face hideous and distorted, as if he was suffering from pain and torment at the moment of death, as Ogata said.

"Drowning refers to death by suffocation caused by a breathing disorder caused by a liquid blocking the airways, also known as drowning." Ogata walked up to the corpse and pointed to the exposed upper body: "Drowning is divided into generalized and asphyxiating, and generally the skin of the corpse we salvage in the sea water swells and falls off, and the liquid seeps into the skin, causing the epidermis to swell, white, and wrinkle. But we all know very well that there are no rivers and oceans nearby, so the most likely location is the fountain near the corpse. ”

"The surface of the corpse is extremely smooth, but the blood vessels and tendons are bulging and maintain a certain elasticity. This is because the blood is mixed with a large amount of water from the respiratory tract, which causes the blood vessels to expand and maintain an upper limit of contraction. The reason why people who drown are very painful is because you will feel the liquid pouring into your mouth and nose, and then these liquids will fill your lungs, heart, and blood like a balloon, slowly swelling, waiting for the internal organs to be unable to support the invasion of these large amounts of fluid, and there is a feeling of bursting at any time. ”

Ogata walked up to the head of the corpse and crouched down, everyone's eyes involuntarily following.

"Evidence of a drowning corpse in general points to foamy drowning fluid, aquatic weeds, sediment, plankton and other foreign bodies in the respiratory tract, in the sphenoid sinus cavity communicating with the mouth and nose, and in the lungs of the deceased during the violent struggle. And in the mouth and nose of the deceased Nikaido, we see that there are a large number of white bubbles. ”

Ogata looked at everyone and asked, "Do you know what the fountain takes to prevent the water gushing out of the pool from causing too much water to flow and form foam?" ”

Everyone shook their heads, most of these people were rich young masters who came to stretch out their hands and eat to open their mouths, and of course they didn't know the construction system of a fountain.

Including Mori Kogoro, he didn't know much about the fountain.

Ogata was thoughtful when he saw Conan, obviously this little imp should know, but it was just inconvenient to speak.

"It's a nitrification system. The biological water purification system with nitrifying bacteria as the core to eliminate nitrate in water is very important in the purification of nitrogen cycle water quality. The nitrified water will be a little sticky and even salty compared to normal water sources. ”

Hearing Ogata talk about the cleaning system of the fountain, Osamu Gojo finally couldn't help but ask, "Do these things have any direct connection with Nikaido's death?" ”

Takashi Ichieda also nodded, and although Shoji Rokuta said, he also suspected that Ogata was deliberately going around in circles, and what he said did not substantially promote the exhibition of the case.

"Listen as I go on, and you'll have some revelations." Ogata was unaffected by them, and his tone was neither hurried nor slow.

Mori Kogoro pinched a handful of sweat for Ogata, because it was definitely not easy for the autopsy of the drowning corpse to find out who the murderer was. In his opinion, Ogata's move today to promise to give detailed results in 'one hour' is youthful and vigorous

"Going back to what I mentioned earlier, there is a lot of foam left between the snorts of the deceased, which is a very normal drowning appearance. Because in the process of holding down Nikaido and pouring water hard, the deceased will also breathe, and after these liquids reach the body, they form feedback, guiding the liquid to flow back, and form foam when you breathe in. ”

Ogata pointed to the corpse's mouth and nose and looked closer, "But you can see that these foams are very persistent and slow to drain liquid. In addition to strength and elasticity, the factors that affect the stability of each foam are bulk viscosity and surface viscosity. The bulk viscosity and surface viscosity are large, and the foam is stable. ”

"That's enough, is this your forensic inference?" Takashi pushed his glasses and said sarcastically.

Xiaolan looked at Ogata a little anxiously, because his inference today was really different from usual, and he talked about a lot of things that had nothing to do with corpses.

Ogata ignored Takashi Ichieda and continued, "Whether it's the foam or the cleaning system of the fountain, the only thing I want to tell you is that the reason why the foam between the deceased's snorts lasts so long under our observation is because the pool water contains a lot of nitrates!" ”

"Nitrates?" Hearing this, Takashi Ichieda, Osamu Gojo, and Shoji Rokuta, these outsiders who were still doubting Ogata's level were all stunned.

"That's right, the so-called nitrification system is the process of converting ammonia ammonia into nitrite and then nitrate in a circulating filtration state. By the time we found the body, I had a filter hole in the nitrification system on the wall of the fountain. Therefore, I am sure to tell you that the body of the deceased Nikaido Yuji contained nitrates that were unique to the treated pool water."

After a pause, Ogata explains, "Nitrate is a relatively unfamiliar term that consists of metal ions or ammonium ions and nitrate ions. Therefore, before setting a series of inferences, we must have a clear understanding that the water source of this fountain is different from the normal water source, and a large proportion of nitrate can be obtained after testing. ”

Gradually, everyone appeared, and what Ogata said was full of appealing places, and it was no longer the resistance in his heart.

"Even if you know that the water contains what you call nitrate, what does that mean?" Rokuta Shoji said with a deep groan. His attitude when questioning was noticeably changing, because convincing is the skill.

Ogata said, "The moment a drowning person enters the water, he will have a subconscious resistance, and his body will violently break free, and he will do a lot of movement with all his strength. So we see that the corpse of this corpse is stiffer than that of a normal corpse, and it forms a little faster. In the process of drowning the deceased, even if the murderer takes care of the deceased, due to the desperate struggle and resistance of the deceased, the body will splash the pool water in the fountain. ”

In an instant, everyone's eyes changed, and their expressions were different.

Maori Kogoro looked at Ogata in surprise, could it be that he underestimated Ogata's ability to forensic medicine and really have the judgment ability of detectives?

This kid! It's not youthful and vigorous, nor is it arrogant, but self-confidence with full control.

"I think everyone is very smart, the pool water splashed on the murderer's body, even if it is stained with rainwater, it is impossible to completely wash it away, and it will detect the nitrate content. However, before I borrow everyone's coats for examination, there is another piece of evidence that will fully expose the truth! ”

Becoming more and more curious, everyone felt as if they were there, feeling the inference process described in the newspapers.

Ogata looked at Kogoro Maori: "Before I shared this autopsy report with you, I mentioned to my uncle about locking the murderer's height, do you remember?" ”

"Hmm." Kogoro Mori nodded.

"In addition to the murderer's confirmed height being less than 1.8 centimeters of the deceased, I also mentioned that there was a corpse plaque on the deceased's erect neck that was obviously caused by the strong pressure of the palm."

"This is it." Ogata flipped over the body of Nikaido Yuji with his white-gloved hands, making him turn his back on everyone, and sure enough, he caught a mark on the corpse that was almost purple. (To be continued...!)

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