is considered a work of scientific racism, and was criticized in its time for drawing conclusions which stretched far beyond (and sometimes counter to) the data it presented. Particularly caustic was the review of the book published by Karl Pearson at Nature, where he considered that "the only thing that is apparent in the whole of this lengthy treatise is that the samples are too small and drawn from too heterogeneous a population to provide any trustworthy conclusions at all". The entire eugenics movement was criticized for being supposedly based on racist and classist assumptions set out to prove the unfitness of wide sections of the American population which Davenport and his followers considered "degenerate", using methods criticized even by British eugenicists as unscientific. In 1907 and 1910 Charles Davenport and his wife wrote four essays that pertained to human hereditary genes. These essays included hair color, eye color, and skin pigmentation. These essays helped pave the way for eugenics to be taught in class. Many of the topics and discussions belonged to Dr. and Mrs. Charles Davenport but the information for one essay in particular came from friends of theirs involved in the same topic. Many problems occurred when they started to use other information. As Davenport and other eugenicist professors and experts began to and continued to study more in-depth eugenics, they had to start to come up with original ideas so as not to conflict with past ideas. Influence on immigration policy in the United States Another way Charles Davenport's work manifested in the public sphere is regarding the topic of immigration. He believed that race determined behavior, and that many mental and behavioral traits were hereditary. He drew these conclusions by studying family pedigrees, and was criticized by some of his peers for making unfounded conclusions. Regardless, Davenport believed that the biological differences between the races justified a strict immigration policy, and that people of races deemed “undesirable” should not be allowed into the country. His support of Mendelian genetics fueled this belief, as he believed allowing certain groups of people to enter the country would negatively impact the nation's genetic pool. Domestically, he also supported the prevention of "negative eugenics" through sterilization and sexual segregation of people who were considered genetically inferior. Sharing the racist views of many scientists during this time, those that Davenport considered to be genetically inferior included Black people and Southeastern