153 MAKVELS OF THE ANIMAL WORLD 



calves, and pigs ; and Blatta orientalis, a product 

 from the cockroach, is used in cases of dropsy. 

 Last, but not least, must be mentioned the world- 

 famed medicine, Oleum jecoris aselli with which 

 we are all so familiar under the name of cod-liver 

 oil. 



