This is a disease caused by _Trypanosoma Equinum_ described by Voges who
studied the affection in the Argentine Republic as it exists in a region
extending from Santa Fe, and Corrientes on the south to Bolivia on the
north. It resembles surra in prevailing in tropical heat, during wet
weather, in its intermittent character, in the presence of the mature
trypanosomata in the blood at the beginning of a paroxysm and their
disappearance toward the end of it, in the supervention of rapid and
extreme emaciation, debility and anæmia, in the destruction of red blood
globules and the passage of the coloring matter by the kidneys, in the
presence of paresis and œdemas, in its expending its energy mainly on
the soliped and in the constancy of the mortality. Death occurs in two
to five months in horses, and six to twelve months in asses and mules.
Swine and water hogs contract the disease casually and it is inoculable
on white and gray rats, mice, rabbits, dogs, goats, sheep, chickens,
turkeys, ducks and monkeys, (Nyctipithecus felinus), and exceptionally
on Guinea pigs. The same measures of prevention would be indicated as in
cases of surra and dourine.