278 Annals of the Carnegie Museum. 



he had a Monitor tied up in the courtyard of his house in Manila, and 

 that, when approached by a dog, it would deal it a sharp blow with 

 its tail which would cause the animal to retreat with a howl of pain 

 and never again attempt to renew acquaintance with the reptile. 

 Such a function was no doubt that of the extremely long tail which 

 we may believe characterized most, if not all, of the Sauropoda. 



