ice fields, where the white man, from the physiological laws
governing his economy, _can not labor and live_: but where the negro
thrives, luxuriates and enjoys existence more than any laboring
peasantry to be found on the continent of Europe; yet we have no schools
or any chair in our numerous institutions of medical learning to teach
the art of curing and preventing the diseases peculiar to our immense
population of negro slaves, or to make them more efficient and valuable,
docile and manageable; comfortable, happy and contented by still further
improving their condition, which can only be done by studying their
nature, and not by the North and South bandying epithets--not by the
quackery which prescribes the same remedy, the liberty elixir, for all
constitutions. The two races, the Anglo-Saxon and the negro, have
antipodal constitutions. The former abounds with red blood, even
penetrating the capillaries and the veins, flushing the face and
illuminating the countenance; the skin white; lips thin; nose high; hair
auburn, flaxen, red or black; beard thick and heavy; eyes brilliant;
will strong and unconquerable; mind and muscles full of energy and
activity. The latter, with molasses blood sluggishly circulating and
scarcely penetrating the capillaries; skin ebony, and the mucous
membranes and muscles partaking of the darker hue pervading the blood
and the cutis; lips thick and protuberant; nose broad and flat; scalp
covered with a coarse, crispy wool in thick naps; beard wanting or
consisting of a few scattering woolly naps, in the "_bucks_,"
provincially so called; mind and body dull and slothful; will weak,
wanting or subdued. The study of such opposite organizations, the one
prone to Phthisis and the other not, can not fail to throw some light on
tubercular disease, the subject of your correspondent, Dr. Hall's
present investigation. In contrasting the typical white man, having an
excess of red blood and a liability to inflammatory and tuberculous
complaints and disorders of the digestive system, with the typical
negro, deficient aerated blood, and abounding in mucosites, having an
active liver and a strong digestion, and a proclivity strongly marked to
fall into congestions, or cold humid engorgements approaching asphyxia,
I hope he will be able to find in this unpolished communication
something useful.

I have the honor to be, with great respect,
SAML. A. CARTWRIGHT