PLATE XI. 



Fig. 1. — Ax Illlstration of the Ixefficiexcy of the Cat as a Rat Catcher. 

 One cat and twenty-four rats as the result of fumigation of the cabin of a steamship. 

 This cat was an exceptionally good ratter and was supposed to have kept the cabin 

 free from rats. In fumigation she was overlooked by accident. (From Public Health 

 Reports, Vol. 29, No. 16.) 



Fig. 2. — The Cat failed. 

 LFour out of six rats taken in 10-cent traps in the author's barn in one night, after 

 rat-catching cat had been in same barn for nine months. (Original photograph.) 



