— S91 — 



called warbles, and are caused by undue pressure from the har- 

 ness. 



Treatment. Rub in, about the size of a bean, of the ointment of 

 red iodide of mercury. (See Prescriptions and Medicines.) 



Skeleton of the Horse, Bones of the. — The skeleton is 

 composed of two hundred and forty-seven separate bones, which 

 are united by joints to form the spine, thorax, pelvis, tail, fore and 

 hind extremities. The spine is finished anteriorly by the head, 

 which is divided into the cranium and face, and contains the 

 teeth. Suspended from the head is the os hyoides, which com- 

 pletes the number of bones. Thus : — 



The spine consists of 7 cervical, 18 dorsal, and 6 lumbar ver- 

 tebrae—Total 31 



The thorax is made up of the dorsal vertebrae, with 18 ribs 



on each side, and the sternum in the middle — Total - - 37 

 The pelvis comprises 2 ossa innominata (or illium, ischium, 



and pubes), and 1 secrum — Total 3 



The tail contains on the average 17 bones - - - - 17 

 The fore extremity is made up on each side of the scapula, 

 humerus, os brachii, and 8 carpal bones, 3 metacarpal, os 

 suffraginis, os coronse, os pedis, os naviculare, 2 ossa sesa- 



moidea — Total on both sides 40 



The hind extremity has the femur, patella, tibia, fibula, 6 

 tarsal bones, 3 metatarsals, os suffraginis, os coronae, os 

 pedis, 03 naviculare, 2 ossa sesamoidea — Total - - - 38 



Bones of the cranium 10 



Bones of the face and lower jaw 18 



Teeth 40 



Bones of the internal ear, 4 in each organ - - - - 8 

 Os hyoides, or bone of the tongue, made up of five sections 5 



Grand total - - - 247 



Skin Diseases. — There are many, and apparently different 

 varieties of skin diseases described by writers, many of which are 

 the same, and produced by the same cause, but present different 

 appearances in difierent animals^ and in different stages and cou- 



