THE OSTRICH. 15 



THE TESTICLES 



of the male, or the ovarium of the female, lie oppo- 

 site the stomach, and under the hump in the back-bone, 

 to which tliey are suspended. 



THE KIDNEYS 



are exceedhigly large, extending along the back-bone 

 from the testicles to the bladder. 



THE BLADDER 



lies just below the rectum, and is nothing more 

 than an enlaro^ement of tlie extreme end of the in- 

 testines. 



The penis is curled up in the bladder. 



The bones of the Ostrich, as in other birds, are 

 hollow. 



The age to which an Ostrich can live is unknown. 

 It has been usually supposed to be very great, possibly 

 a hundred years, as some people assert, though we 

 believe this to be entirely guess-work. The usual calcu- 

 lation for animals, that of six times the period it takes 

 to arrive at maturity, would give it twenty-four years, 

 but we are inclined to think that it reaches a greater 

 age than this. 



