This taint of constitutional sadness was not peculiar to Lincoln; it may be said to have been endemic among the early settlers of the West. It had its origin partly in the circumstances of their lives, the severe and dismal loneliness in which their struggle for existence for the most part went on. Their summers were passed in the solitude of the woods; in the winter they were often snowed up for months in the more desolate isolation of their own poor cabins. Their subjects of conversation were limited, their range of thoughts and ideas narrow and barren. There was as little cheerfulness in their manners as there was incentive to it in their lives. They occasionally burst out into wild frolic, which easily assumed the form of comic outrage, but of the sustained cheerfulness of social civilized life they knew very little. One of the few pioneers who have written their observations of their own people, John L. McConnell, says, "They are at the best not a cheerful race; though they sometimes join in festivities, it is but seldom, and the wildness of their dissipation is too often in proportion to its infrequency. There is none of that serene contentment which distinguishes the tillers of the ground in other lands.... Acquainted with the character [of the pioneer], you do not expect him to smile much, but now and then he laughs." Besides this generic tendency to melancholy, very many of the pioneers were subject in early life to malarial influences, the effect of which remained with them all their days. Hewing out their plantations in the primeval woods amid the undisturbed shadow of centuries, breaking a soil thick with ages of vegetable decomposition, sleeping in half- faced camps, where the heavy air of the rank woods was in their lungs all night, or in the fouler atmosphere of overcrowded cabins, they were especially subject to miasmatic fevers. Many died, and of those who survived, a great number, after they had outgrown the more immediate manifestations of disease, retained in nervous disorders of all kinds the distressing traces of the maladies which afflicted their childhood. In the early life of Lincoln these unwholesome physical conditions were especially prevalent. The country about Pigeon Creek was literally devastated by the terrible malady called "milk- sickness," which carried away his mother and half her family. His father left his home in Macon County, also, on account of the frequency and severity of the attacks of fever and ague which were suffered there; and, in general, Abraham was exposed through all the earlier part of his life to those malarial influences which made, during the first half of this century, the various preparations of Peruvian bark a part of the daily food of the people of Indiana and Illinois. In many instances this miasmatic poison did not destroy the strength or materially shorten the lives of those who absorbed it in their youth; but the effects remained in periodical attacks of gloom