This writer clearly flags where he is coming from to all who know the history of the debate. Lamarck is the father of Socialist Biology--the concept refined by the Soviet Lyschenko, and considered a joke in serious scientific circles, for many years.
If you go closely through the article, you will notice that the writer engages in many slights of hand--changes the subject subtly and almost inobtrusively, to mislead the reader. In point of fact the present races have been observed with their present traits both physical and personality since Egyptian times, and have shown little or no deviation with cultural changes. To those not looking to prove human oneness, it should be obvious that men make their culture, not culture men.
To understand the mindset behind this verbose pseudo-science, that is so popular today in American "Higher" Education, see Myths & Myth Makers In American "Higher" Education. It is obvious that this fellow is following in the footsteps of Ashley Montagu, who is one of the "Myth Makers" discussed in the essay.
Interestingly enough, Montagu had a Rutgers position for some time--he was originally a product of the notorious Boas group at Columbia--and may have had a hand in this fellow publishing there. (Montagu was still alive, the last I heard, in his late 90s.)
William Flax Return Of The Gods Web Site