EXTRACTS FROM FOREIGN JOURNALS. 
83 
and later on other portions. After a papular stage there appear 
bald spots covered with greyish scales and yellowish or blueish- 
grey fishscale-like crusts. There is much itching. The skin is 
wrinkled and thickened between the crusts. 
In the pig the itch appears as the sarcoptes itch. It is first 
seen on the skin of the cheeks, the back and the inner surface of 
the legs, and spreads then pver the entire body. These gradually 
form whitish-grey crusts, 5-10 mm. thick, which give the animal 
a peculiar fungoid appearance. The bristles fall out and the 
skin is thickened acd wrinkled. 
In the dog we have: 
1. Sarcoptes itch. Here the head, belly, root of the tail, 
prepuce are especially liable to be affected. There appear small 
red macules, which become papulae and vesicular and sometimes 
even pustular. These then dry up into greyish-yellow crusts. 
There is marked desquamation of the epidermis, falling out of 
the hair, and the vigorous rubbing and scrubbing caused by the 
itching leads to a secondary eczema which is polymorphous, and 
usually leads to thickening and wrinkling of the skin. 
2. Dermatophagus itch. The d. canis above mentioned is 
found in the external auditory passage of the dog. Dogs often 
suffer from otitis externa, and in the abundent purulent secretion 
these itch-insects are occasionally found. What part they play in 
the causatien of the malady is not fully known. 
{To be continued .) 
EXTRACTS FROM FOREIGN JOURNALS. 
NARCOTISM SIMULATING TYPHOID FEVER—PRODUCED BY 
PAPAVERUS RHGEAS. 
By M. L. Trasbot. 
The necessity of careful and minute inquiry into the history 
of cases is enforced by the recorded errors of diagnosis which are 
sometimes justly charged upon veterinarians, and it is from the 
fact that these errors not unfrequently lead to very serious, and 
may indeed result in fatal consequences to the patients, that the 
record of their occurrence derives its principal value. In the 
