It is well that we take stock of the men and women in America who are interested in paleontology, to see how many there are of us, what we are doing in spreading the knowledge of our subject, and how well this is being done. As to this personnel, we are greatly aided by a study of the membership of the Paleontological Society, taking the list of 1918. The Society then had 190 members, and this number probably includes all of the American paleontologists but three, and these three, curiously, are actively interested in the science. The list shows 12 members in Canada, 1 in Mexico, and 177 in the United States. Of the 184 living members, about 93 are connected with teaching institutions, about 60 with geological surveys and museums, and about 31 are outside of either of these two groups. From these figures we learn that there are . . .