Case VIII.--Apparently the issue in the second generation is from two parentages. There are fifteen persons accounted for. Seven died in infancy of convulsions. Epilepsy, scrofula, and idiocy can claim one each. One was drowned, and four are healthy. That is, of seven surviving children, four are healthy. In all from fifteen parents there is the alarming increase of fifty-six persons. Of these eleven are healthy, fourteen are not described, fourteen are defective and seventeen are dead. The total number of living descendants, representing no less than the third generation of seven families, is but thirty-nine. These figures can scarcely be quoted to prove the "fertility of the unfit," but that is the title that stands over them. As to the hereditary tendencies that they propagate, more information is required. It is a well known fact that in cases of hereditary defect there is a tendency for the defect to appear at either an earlier or later stage in life in each successive generation (Mercier). In the first case the family dies out, in the second case it recovers itself. In cases of congenital defect, there is very little to fear. The lunatic is locked up and the epileptic is avoided. Nature deals most successfully with these cases. She saves where possible and destroys when recovery is hopeless. Very slowly perhaps, but very exactly--never making a mistake, and in her slowness she is but giving man an opportunity to contribute something towards the recovery she aims at.