178 VENOMS 
such as the pleura or pericardium, may supervene more or less 
slowly. Pulmonary infarcts are sometimes produced, as well as 
desquamation and hæmorrhage from the kidneys, albuminuria, or 
hæmaturia. These lesions, which are more or less severe, last for 
several days, and then slowly disappear after a period of true con- 
valescence. In many cases they leave behind them traces which 
last for months and even years, and they then more or less affect 
the health of the subjects according to the organs that were most 
most seriously affected. 
In certain cases, in domestic animals such as dogs, and more 
rarely in man, after recovery from the bite of a viper, total or 
partial loss of sight, smell, or hearing, has been observed. Such 
results, however, are fortunately exceptional. 
