Chapter 1110 Maggot Envoy
Bang bang bang.
The technician picked up the camera, pointed it at the corpse and the scene around the scene, and killed the film in one move, shuttering wildly.
Miao Ruixiang, who came from Ningtai County with his family, was humming while wearing a three-piece suit.
He is Jiang Yuan's junior brother and a close disciple of Wu Jun. During his stay in Ningtai, he also followed Wu Jun to see many corpses of abnormal deaths, but he was not qualified or had the opportunity to independently dissect the corpses that were really considered murder cases. Only by following Jiang Yuan can we have the opportunity to learn.
Miao Ruixiang made a few gestures, put on his equipment, and then stepped forward to serve Jiang Yuandao in the same way he served his master Wu Jun: "Brother, what should I do now?"
"Prepare the bottle first. What is used here?" Jiang Yuan was talking about the poison bottle used in forensic entomology.
"Ethanol." Miao Ruixiang began to dig out equipment.
These maggots on the corpse, including their eggs and adults, will be executed if caught. Because there is no point in bringing them alive, and because the bugs continue to grow, it is easy to interfere with the judgment of the time of death.
Therefore, rapid execution of insects is the first step in forensic entomology. Poison bottles in textbooks often have a two-level structure with upper and lower layers, like a duplex gas chamber for insects. Fumigants are placed in the lower layer and insects are stuffed in the upper layer. They are caught and killed at the same time. The stability is relatively high and the effect is small. Well, it’s just a little more troublesome and the cost is a little higher.
Ethanol is a relatively simple solution. Although it is a little wetter than poisonous gas, the alcohol evaporates quickly and generally does not affect the operation.
Of course, many districts and counties will also use cheaper solutions, such as boiling water.
The little maggots themselves are extremely white and tender. They are usually little ones that are only a few days old. They are smaller than any other veal, so it is very convenient to blanch them in boiling water and keep their appearance relatively intact.
Miao Ruixiang picked up large maggots and threw them into an ethanol bottle.
The main purpose of catching maggots is to confirm the time of death of the body. Common flies will rush to lay eggs within an hour of human death. The egg period usually lasts one to two days, and maggots hatch out. Maggots usually have three instars, each of which looks different. Finally, it turns into a pupa and emerges into an adult.
If there are still nutrients on the corpse at this time, this step can be repeated.
To put it in a easier-to-remember way, flies in the egg stage are like the gas refining stage. As long as they are scattered in places with resources, they can quickly break through and become maggots in the foundation building stage. Maggots already have a certain ability to move. When they burrow into the corpse, they will undergo three important changes, just like building the foundation to the golden elixir, and the golden elixir to the Nascent Soul.
Maggots in the Nascent Soul stage metamorphose again, which is the pupa stage. The pupal stage lasts for a long time, often more than a week.
However, once the pupa stage is broken through, it will be the time of emergence. Just like transforming into a god, there will be no obstacles in the world and you can enter the fairyland.
The god-like adult insects are naturally difficult to catch. The pupa and egg stages are right there, so there is no need to catch them.
Only the maggots in the third instar of Zhuji, Jindan and Nascent Soul are difficult to distinguish at first glance. If you want to take a closer look, they are still burrowing around like pupae and pupae. They cannot escape, but it affects the observation very much.
I had to pick up the big ones and execute a batch, then take a closer look.
The main thing is to find their big brother.
It doesn’t matter when the subsequent maggots were born. To confirm the time of death, the most important thing is to determine when the first batch of eggs were sown. Furthermore, where were the first maggots born? One.
A relatively simple method is to compare sizes.
Of the same batch of maggots, the one with the strongest power... no, the largest one can be considered as the earliest maggot to be born, and then by working backwards the time of egg laying, the time of death can be determined.
These are the basic knowledge of forensic medicine. To master them, you need about LV0.1 level of forensic entomology, and Miao Ruixiang can do it easily.
I saw him picking up the big ones from the clusters of maggots and throwing some into the bottle, and then started to go to the lower third of the body.
This is not to say that he was influenced by Liu Wenkai, but because when flies lay their eggs, they like to lay their eggs in warm, moist and cracked places.
As the saying goes, flies don't bite seamless eggs. In forensic entomology, it means that flies only look for cracks to lay eggs.
As a result, the maggots in the lower third of the body are usually larger and stronger, just like the center of a continent, and maggots in other places are more likely to migrate from the center.
Miao Ruixiang nimbly took out handfuls of maggots from the lower part of the body and stuffed them into a large ethanol bottle.
As he moved and the filling of the maggots disappeared, some rotten meat also fell down.
The smell of corpses in the air began to become stronger.
Jiang Yuan put on a 3m gas mask.
The corpse in the maggot state is almost the smelliest state, second only to the giant corpse when it is cut open. For the latter, even wearing a gas mask cannot stop the spread of odor, especially when indoors, wearing it is worse than not wearing it at all.
It's just right now. We're out in the wild and the body isn't smelling the most. However, Miao Ruixiang did not wear a gas mask because he wanted to catch maggots, and the resin mask of the gas mask somewhat affected the view of details. If he caught them slowly, he would have to squat next to the corpse for a longer time, and he would have to stay close to the corpse. It's better not to wear it.
"That's almost it." Miao Ruixiang stopped when the ethanol in the bottle he grabbed overflowed.
Jiang Yuan took a look, nodded, and said, "You pick out the big ones from the side and throw away the small ones."
"Oh." Miao Ruixiang obediently ran to a place a little further away, moved a survey box over and laid it flat, then poured all the maggots in the poison bottle onto the box, then straightened them one by one with his hands, and then sorted them one by one.
Perhaps because he caught too many and poured them too quickly, some maggots were not dead yet and were still wriggling on the survey box.
Maggots are different from snakes. Snakes move by abdominal muscles and core muscles, while maggots move by stretching.
In other words, when maggots wriggle, their length changes.
This completely affects the accuracy of the measurement.
Miao Ruixiang had to put the wriggling maggots back into the poison bottle and sort the other well-behaved ones first.
On the survey box, there were piles of maggots on the right, and maggots lined up one by one on the left. As more maggots were lined up, Miao Ruixiang's positioning became more accurate and he began to eliminate the smaller ones in batches.
At the same time, after completing the initial observation, Jiang Yuan put on three layers of gloves.
The outer two layers of these three layers of gloves are latex gloves, similar to the gloves worn by surgeons during surgery. The innermost layer is a PVC glove used to isolate acid, alkali and grease, similar to the gloves used in many restaurants for eating crayfish or large bones.
After wearing a full set of protective equipment and making sure that the photo was taken, Jiang Yuan slowly turned the body over under the full recording of the camera.
Jiang Yuan's first touch felt greasy. This was because the body fat liquefied after the body rotted.
The body was slippery at this time, and Jiang Yuan had to use force in his hands to grab the body. However, in this way, the already soft and rotten meat was crushed again, and the rotten meat and maggots fell again.
Ga.
Several crows circled in the air with red eyes, wishing to knock down everyone at the scene.
"It should be a case." Jiang Yuan tore off several pieces of flesh from the corpse, then pointed to the place below where a large group of maggots gathered, and said, "Take a few photos here, take a clearer picture, it should be a wound."
Flies not only like to lay eggs in the gaps of the lower three roads, but also like to lay eggs on the wounds of the corpse.
At this time, the specific shape of the wound could no longer be seen at the location pointed by Jiang Yuan, but after his reminder, a rough shape could still be seen.
This shape is enough to confirm the case.
The presence of a rotten corpse does not necessarily mean a murder case, it may also be that someone died here accidentally. Of course, as far as the location of this corpse is concerned, a knowledgeable criminal police officer will know that this possibility is extremely low after taking a look.
But anyway, it is more comfortable to have the confirmation of the forensic doctor.
Jiang Yuan continued to look through the corpse, and the milky white latex gloves soon turned light yellow, and the surface began to become bumpy. It was the decaying liquid of the corpse that corroded the latex.
PVC gloves were temporarily unaffected by this. When Jiang Yuan's outermost gloves began to become uncomfortable, he stood up silently, took off the outermost gloves, put on a new pair of latex gloves, and continued to look through the corpse.