CHAPTER XXTL 
THE STEANGE INSTINCTS OE CATTLE. 
My purpose in this paper is to discuss a group 
of curious and useless emotional instincts of 
social animals, which have not yet been properly 
explained. Excepting two of the number, placed 
first and last in the list, they are not related in 
their origin ; consequently they are here grouped 
together arbitrarily^ only for the reason that we 
are very familiar with them on account of their 
survival in our domestic animals, and because they 
are, as I have said, useless ; also because they re- 
semble each other, among the passions and ac- 
tions of the lower animals, in their effect on our 
minds. This is in all cases unpleasant, and some- 
times exceedingly painful, as when species that 
rank next to ourselves in their developed intelli- 
gence and organized societies, such as elephants, 
monkeys, dogs, and cattle, are seen under the 
domination of impulses, in some cases resembling 
insanity, and in others simulating the darkest 
passions of man. 
These instincts are : — - 
(1) The excitement caused by the smell of blood, 
noticeable in horses and cattle among our domestic 
animals, and varying greatly in degree, from an 
