Introduction
Culpable homicide is the genus; murder is its aggravated species. Every murder is culpable homicide, but culpable homicide is murder only when the case falls within one of the four clauses of section 300 and outside its five exceptions.
The mental elements compared
| Degree of blameworthiness | Section 299 | Section 300 |
|---|---|---|
| Highest | Intention of causing death | Clause 1 — the same intention |
| Intermediate | Intention of causing bodily injury likely to cause death | Clause 2 — injury known to be likely to cause the death of the particular person; Clause 3 — injury sufficient in the ordinary course of nature to cause death |
| Lowest | Knowledge that the act is likely to cause death | Clause 4 — knowledge that the act is so imminently dangerous that it must in all probability cause death, without excuse |
The difference is one of degree. The word “likely” in section 299 signals probability; the phrase “sufficient in the ordinary course of nature” in clause 3 signals near-certainty.
The exceptions
Even where a clause of section 300 applies, the offence becomes culpable homicide not amounting to murder if the case falls within one of the exceptions: grave and sudden provocation, exceeding private defence in good faith, a public servant exceeding powers in good faith, a sudden fight without premeditation, or the consent of a person above eighteen.
Conclusion
To decide whether a killing is murder, establish causation, identify the mental state, place it in the table, and then test each exception the facts suggest. Conclude with the punishment section — section 302 for murder or section 304 for culpable homicide not amounting to murder.
Original demonstration content, pending legal review.