It would appear that persons of scientific attainment could be counted upon not to attempt murder. This is not true. Education is not a one-hundred percent deterrent to crime. Educated persons have only a slightly less average as potential murderers than the illiterate. Not even motives differ except in cases of murder for robbery. Considering robbery as greed this difference is removed. Jealousy figures as a motive in a large number of murders and among the educated murderers it is paramount. [Illustration] Considering murder--for that matter all forms of crime--as an art it would seem likely that the criminals of education or scientific attainment would excel as master craftsmen. This isn't true either. Just the opposite prevails. In practically all crimes attempted by scientists they bungle their jobs completely. The record proves positively that as criminals scientists are flunkies without a single recorded exception. Where a murder is committed by a method that destroys its own evidence or fails to leave what might be called a "trace" or clue detectives are hampered but not necessarily baffled. In these cases, almost without exception, it is circumstances that bring the criminal to punishment. While a jury might refuse to convict on circumstantial evidence a detective is not so deterred. The scientific detective turns science against the scientific murderer. He batters the suspect with circumstantial evidence until in nine out of ten cases the scientific suspect weakens and acknowledges his crime. Circumstantial evidence backed by a confession that checks on all angles is about all any jury needs to be convinced of guilt. When your correspondent began to dig into this subject of artistic or scientific murder Government detectives--themselves master scientists--made a request. They asked that we be "a little vague" in the use of proper names and in description of the eighteen murder methods most difficult of detection. So, we will name no chemicals or poisons but confine ourselves to effects and processes. The commonest method is the complete destruction of the corpse--the corpus delicti. Cremation is the usual means resorted to. The body is burned in a furnace or on a pyre. Effort is sometimes made to make identification impossible by burning the body or parts of it in gasoline flames. The scientist has no edge on his uneducated fellow in this type of murder case. He practically never is able to remain with the burning corpse long enough to do a perfect job.