32. =Hypostasis.= After death the blood passes into the veins and very soon through gravity collects in the greatly distended veins of the lowest portions of the body, except where these are pressed upon by the weight of the body. Such a settling of the blood begins usually within 1-2 hours after death, but may take place even before death (hypostatic congestion) in cases of long-standing recumbent position, cardiac lesions with failure of compensation, wasting diseases, acute infections, death from suffocation, etc. Postmortem lividity should be described as to its extent, location and color. In anæmia the color is pale purplish red, in congestion dark purple, in cyanosis the color may be dark bluish red and the fingers, toes, ears, etc., retain the cyanotic appearance for some hours after death; in potassium-chlorate poisoning the color is chocolate, in hydrogen-sulphide poisoning grayish green, in poisoning with hydrocyanic acid or carbon monoxide it is rose or cherry red. Fresh hypostatic patches can be made pale by pressure and when cut they will bleed freely. Hemorrhages cannot be pressed out nor will hemorrhagic areas bleed as freely as hypostatic patches. In all medicolegal cases care should be taken to differentiate bruises and ecchymoses from hypostatic patches, as in the popular mind the latter are often regarded as evidences of trauma or violence. The location of the hypostasis is of importance in showing the position of the body after death; if the anterior portion of the body is hypostatic the cadaver must have been lying upon its face for some time after death; suspension of the body for some time after death by hanging causes a hypostasis of the lower extremities. Of the internal organs the brain, lungs, stomach and coils of intestine chiefly show hypostasis. Antemortem hypostasis of the lungs is distinguished from postmortem by its deeper color, firmer consistence, more marked œdema and microscopic signs of beginning inflammation (hypostatic pneumonia). Cadaveric lividity reaches its maximum in 24-48 hours, and after this time diffusion gradually occurs. In connection with the examination of hypostatic areas the condition of the superficial vessels as to size, distention, etc., should always be noted.