110 OPHIDIANS. 
semi-coagulated, from the nose, ears, and rectum; veins of 
the conjunctiva are surcharged, so that the eyes have the 
color of raw beef; tremulousness and subsultus tendinum ; 
discoloration of the bitten part; the blood is coagulated near 
the wound, and will only flow from it after deep incisions 
have been made just at or above the wound made by the 
fangs, and the limb has been bathed repeatedly in hot water, 
rubbing it down towards the bitten part so as to force out the 
coagulated blood. This poison causes death in from three 
hours to three days, according to the “condition of virulence” 
of the poison. 
The Boqui Dorada, Yellow-mouthed Viper, or Vipera 
lachesis os flavus, is possessed of a very virulent poison, which 
causes as many deaths as that of any other variety in the val- 
leys of the River Magdalena and its tributaries. Toxical 
effects are: Flow of blood from the nose and mouth; evacua- 
tions of fecal matter, with clots of dark-colored blood, or 
scanty, suppressed evacuations ; heaviness of the head; stu- 
por; sensation of oppression in the chest and lungs; repeated 
blows upon the tympanum (like those made by a hammer) ; 
vertigo ; loss of sight; intense pains in the spinal column and 
the shoulder-blades ; cramps; colicky pains in the abdomen ; 
throbbing pains in the bitten part, increasing with the cedema; 
discharge of bloody urine; pulse has a slow, heavy beat; 
rheumatic pains in the muscles in twinges; blue-black spots 
under the nails of the fingers and toes ; lips discolored; eyes 
bloodshot; chills, followed by reranee in the whole body, 
while the sins is flushed and indicates a highly feverish con- 
dition ; flow of a greenish, sanguinolent foam from the mouth. 
This latter symptom invariably precedes death, and continues 
for some hours after it has ensued. Death ensues in from 
three hours to three days. 
