Concubine

Chapter 499 Raising Fly Maggots
"What fact?" Cheng Ziqin asked.

"Although the neck fracture has been completely destroyed by fly maggots, it is impossible to tell whether it was a sharp wound, but the traces in other places can help us figure out this problem."

Yang Tashan cut open the densely packed maggots wriggling around the neck with a probe, exposing the remaining half of the neck, which was already full of holes pierced by the maggot protein-dissolving enzyme digestion solution, and he inserted the probes into several of the holes Said: "Look carefully, the size and depth of these holes are different from those formed by maggots. They were formed by the teeth of wild dogs. And—"

The probe was inconvenient, so Yang Tashan simply separated the corrupted soft tissue at the fracture of the cervical spine with his hands, exposing the cervical spine, wiped that section of the spine with the back of a deerskin glove, and pointed to a few small scratches on the vertebral arch of a cervical spine. Mark: "Look carefully, this scratch is curved, and it is absolutely impossible to be formed by a machete such as a knife."

"That's right, it was bitten by wild dogs and other animals." This time the traces were obvious, and Cheng Ziqin no longer argued with Yang Tashan.

Yang Tashan then dug open the fly maggots on the hemisphere and the wound on the thigh, and said: "Catcher, please pay attention. Although the wound walls in these places have also been damaged by fly maggots, the general shape of the wound can still be distinguished. Gouging out with a knife, it is difficult to form such a wound, especially the wound on the thigh, which should be formed by wild dogs biting and tearing off the flesh on the corpse."

"Are wild dogs or jackals that powerful?"

"Don't underestimate the biting ability of wild dogs, especially when the corpse is already highly corrupted. The muscle tissue is like blunted braised pork. Wild dogs can easily tear off large pieces of muscle. It is not difficult for a group of wild dogs to tear off a human's cervical spine."

Cheng Ziqin couldn't help turning his stomach, and he didn't know if it was because of the smell of the corpse, or if Yang Tashan's words were too disgusting.

Cheng Ziqin frowned and said, "Okay, even if you're right, a wild dog or a jackal tore off her head, how did this person die, have you found out?"

Yang Tashan shook his head: "No, I carefully checked all the wounds on the headless corpse just now, and found no obvious fatal trauma. These wounds were all bitten by wild dogs. No trace of homicide was found."

"Then, is it suicide? Impossible!" Cheng Ziqin said.

"I didn't say it was a suicide, I mean that there is no sufficient evidence to prove the cause of the woman's death."

Cheng Ziqin also agreed with this, and asked, "Then what should we do now?"

"First, try to find the head of the deceased. If we judge correctly that the head was bitten off by a wild dog, then the head should be near here; second, determine the source of the corpse and find out who the dead is; third, find The first scene of death. Our investigation will only be meaningful if we are sure that this person was actually murdered."

Cheng Ziqin nodded, stood up and said loudly to the policemen standing not far away: "You search this area with a net, look for the head of this headless corpse, and then check if there are any clothes or other suspicious items. .”

Luo Yi and other arresters agreed, lined up in a long row, and slowly searched with a net.

Cheng Ziqin asked again: "How can we find the first scene?"

Yang Tashan smiled wryly: "I don't know about that." He stood up, looked around, and continued: "After they search first, see if they find anything. Maybe the first scene is near Pingtougou. Perhaps in Qingyang City or a nearby village, someone moved the corpse here."

Then Yang Tashan walked to his forensic evidence investigation box, took out two small bottles from it, returned to the corpse, picked some fly maggots from each wound, and put them into the two small bottles respectively.

Seeing this scene, Cheng Ziqin felt disgusted and curious, frowned and asked, "What are you doing with these maggots?"

"Take it back and raise it."

"Ah!" Cheng Ziqin exclaimed in surprise, looking at Yang Tashan in horror, she couldn't believe that Yang Tashan still had such a perverted hobby.

Yang Tashan smiled: "Don't underestimate these fly maggots, as long as you treat them well, they can tell you a lot of things you want to know."

Cheng Ziqin was a little apprehensive, and asked, "They... what can they tell?"

"For example, when did the deceased die!"

"This... how do you know?"

"Once a person dies, there will be a smell of corruption. Although the human nose cannot detect the smell of corruption at this time, flies already know it. They will soon find the corpse and start laying eggs on the corpse. Afterwards, beetles , parasitic wasps, mites, ground beetles, and moths, etc., will also come to the corpse one after another. The appearance of these insects has a certain pattern, and we can reversely deduce the death time of the deceased according to the pattern of the appearance of these insects."

Hearing his mysterious words, Cheng Ziqin hurriedly asked, "What are the rules for the appearance of these insects?"

"As far as flies are concerned, there are many kinds of flies. Each type of fly has different preferences for corpses. Some like fresh corpses, and some like decayed corpses. To put it simply, under normal circumstances, two days after a person dies, The ones that come to the corpse will be blowflies and hempflies, etc., and they will lay their eggs on the eyes, nose, ears, throat, guides, wounds of the corpse."

"Why don't other flies come?"

"Because other flies like dead bodies that are badly decomposed or even highly decomposed, they are not interested in fresh carcasses, so they won't come."

Cheng Ziqin was even more curious when he heard that there was so much knowledge in it, and asked, "After the corpse decays, what kind of flies will come?"

"Two to seven days after death, at this time, the corpse exposed to the air has begun to enter a period of serious putrefaction. At this time, besides blowflies and hemp flies, case flies and scorpion flies will also fly to lay eggs on the corpses. Four to thirteen days after death, most of the soft tissue of the corpse has been eaten by fly larvae. At this time, the corpse is already highly decomposed, which attracts a large number of scavenging and predatory beetles. In the later stage of this stage, The larvae of blowflies and hemp flies leave the carcass and become pupae."

Cheng Ziqin frowned almost together, hearing Yang Tashan's words, his stomach churned for a while.

Yang Tashan smiled and continued: "By the tenth to 23rd day, the flesh of the corpse was almost eaten up, leaving only hair, skin and cartilage, which are not interesting to flies and other insects, so they They left one after another, but all kinds of beetles liked it very much. At this time, they would come to the remaining corpses in large numbers. After they ate up what they liked and left, the corpses had nothing to eat, but , At this time there are still animals beside the corpse."

Cheng Ziqin tried hard to suppress his upset stomach, and said, "The flesh of the corpse has been eaten up, so what insects are there?"

"Mites!" Yang Tashan said, "They will appear in the soil under the corpse and last for three months."

Cheng Ziqin used to only see fly maggots or pupae on the corpse, and he didn't think about the law of these things, let alone connect it with the time of death. Now, after hearing what Yang Tashan said, he suddenly realized, Said: "According to what you said, as long as some insects are found on the corpse, you can roughly know the time of the deceased's death?"

"Yes! I have these two bottles, one is a storage cup for preservation solution, and the other is a breeding cup. I put these fly maggots back in order to cultivate them into adults. On the one hand, I can see what these fly maggots look like. Flies, on the other hand, look at how long they were grown and thus infer the time of death of the deceased. Once the time of death is accurately determined, it can provide the basis for us to identify and rule out criminal suspects in the future."

After all, Cheng Ziqin came from a family of police officers, and her father was an old police officer, so of course she knew the importance of determining the death event to solve the case.Asked: "What you just said is a time period. How do you know when it is?"

"Of course there is a way." Yang Tashan said, "For example, in this case, the corpse has been highly corrupted, and the speed of corpse decay is greatly affected by the temperature. According to the current hot weather, it only takes two days to reach this step, so the preliminary judgment The time of death was more than two days. I moved the joints of the corpse just now, and found that the rigors had been completely relieved, so judging from this, I have been dead for at least four days..."

"Wait!" Cheng Ziqin blinked, "What did you say just now that the rigor is relieved, what happened for four days, what's going on?"

"The rigor is the stiffness of the corpse..."

"You don't need to say that, I know it!" Cheng Ziqin was annoyed by being underestimated. After all, she was from a family of police officers, and she knew that this person would become stiff after death. If the stiffness is completely relieved, it can be inferred that he died for four days, what is going on here?"

"People become stiff after death, and there are rules to follow for this kind of stiffness." Yang Tashan explained patiently, "Generally speaking, rigor will appear about an hour after death, and it will spread to the whole body within four hours. It began to relieve, and then it was completely relieved in three to four days. So, I moved the joints of the corpse just now and found that the rigors had been completely relieved, so I came to the preliminary judgment of four days of death."

"You mean, based on the comprehensive judgment of the body's corruption and rigor, this person has been dead for at least four days?"

"Yes, but this is only the minimum time of death, not the exact time. To determine the exact time of death, more evidence must be found."

(To be continued, if you want to know what happens next, please visit www.CMFU.COM, more chapters, support the author, support genuine reading!)
(End of this chapter)