The third installment of the International Eugenics Congress of was also the last. It was very sparsely attended compared to the previous two installments, with fewer than a 100 delegates present at the academic meeting of the Congress. By the 1930s the eugenics movement had come under fire from several prominent scientists who were openly critical of the scientific merits of eugenics. There were critics within the eugenics community itself, sometimes referred to as reform eugenicists. They believed that mainline eugenicists like Charles Davenport and Harry Laughlin didn’t sufficiently account for the effects of economics and environment in their eugenical philosophy. Among these reform eugenicists present at the Third Congress were Washington D.C. eugenicist/geneticist Robert Cook who presented a paper entitled Is Eugenics Half Baked? and future Nobel Laureate Hermann J. Muller who presented a paper entitled The Dominance of Economics Over Eugenics.