584 THE VETERINARY SCIENCE 



Treatment. — If from want of animal food, feed more 

 ground bone and meat. 



It is a good plan to trim a little off the end of the beak 

 of the offender with a sharp knife, and then allow her to try 

 satisfying this morbid desire for eggs on one made of china. 

 It is said that one or two attempts to break a china egg 

 with a bill pared to the quick is sufficient to bring about a 

 cure. 



6. Fits. 



Causes. — These are usually due to some other physical 

 derangement, such as may be caused by exposure to the 

 hot sun or to the presence of worms. 



Symptoms. — The bird suddenly falls, flutters about and 

 finally, in many cases, becomes insensible. 



Treatment. — Ascertain the cause, if possible, and treat 

 accordingly. 



Cold water to the head is a good remedy. 



7. Sterility (Barrenness). 



This term is applied to a condition of either male or fe- 

 male, the consequence of which is the production of infer- 

 tile eggs. 



An infertile egg is one which, when subjected to proper 

 conditions, fails to produce a chick because of the absence in 

 it of the life germ. 



Causes. — Infertile eggs may, of course, be due to the 

 male or to the female, and may be the result of a great many 

 causes unnecessary to enumerate here, more than to say 

 that these causes are, as a rule, in the great majority of 

 cases due to conditions directly opposed to those outlined in 

 the following section to ensure the production of fertile eggs. 



Treatment. — Remove the cause by bettering the condi- 

 tion and endeavoring to carry out the principles laid down 

 for the securing of fertility, Chap. IX, Sect. 4. 



8. Vertigo. 



Causes. — Excessive feeding of fat-producing food, pro- 

 ducing an over fat condition causes the brain to be affected, 

 thus giving rise to vertigo. 



Symptoms. — Partial control of the limbs is lost and the 

 patient frequently runs about in a circle. 



