He believed that Morton finagled and fudged his own research in order to control prior convictions. He also mentions that Morton was a fraud in the name of science and that those people are the least interesting because it explains to society nothing, but insane opinions that only make sense in the scientist on mind.
I believe the gap is the lack of knowledge pertaining to the different sub races that were not accounted for and studied. This amalgamation created stereotypical and falsified information upon races that were seen as “closely related to” or “blended” which created the uneducated teachings and lecturing of amalgamation.
That too many people back then were mixed (races) and so the word “colored” was more of a term for “african decent”. Also the falsification that blended races would eventually lead to extinction or deterioration of human kind.
One convincing peace that I read that made me believe his statement was true was the mentioning of a town that was once had the purity of the african race. He almost tries to disprove his theory but then goes on to write that even that was not true anymore. If anyone tries to disprove a theory before writing their main convincing article, then this (I believe) would enhance the writer’s credibility.
One warrant is the life of sexual immorality. Since it is so prevalent in large cities, the mixing of races happened more than people could fathom. Although the law of similarity typically kept groups or races separated sexually, sympathy and affection would take a strong hold on emotions for most people, leading to the sexual desires between two completely opposite groups or races like whites and blacks.
The mixing of blacks and whites deteriorates certain features of a pure race. Example: black race loses physical stamina and health when mixed with the white race.