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feet turned out and the knees bent in. Colts bo affected soon got 

 well when they are supplied with good, nutritious food, in which 

 the phosphate of lime predominates. Rachitis (pronounced 

 racketis), in old horses, is seldom seen ; and when it is, it is in 

 tlie bones of the back or lumbar vertebrae, is characterized by 

 ewellings of an irregular kind, with water oozing from them, and 

 is called hydro-rachitis or spina-bifida. Horses so affected are not 

 fit for work with weight upon the back. (See Deformities.) 



Resolution. — This is the most favorable termination of 

 inflammation, and leaves the inflamed part in the same state or 

 condition in which it was before it was attacked. 



Respiration. — The alternate inspiration and expiration of air 

 performed for the purpose of exchanging the hydrogen and carbon 

 for oxygen. The air being brought in contact with the blood, as 

 it circulates through the lungs, the oxygen unites with it, and the 

 nitrogen and carbonic acid gas is returned by expiration. The 

 oxygen and some of the inhaled air is united in the lungs with 

 free hydrogen, which is given out from the lungs, and is readily 

 seen issuing from the nostrils on a frosty morning, or when the 

 thermometer is about 40°. 



Revulsion. — A second attack of disease, but in a remote or 

 different part of the body from which the first attack had its seat. 

 Example : If an eruption, or the abscess of strangles be repelled 

 from the outside of the body, we will find it attacking an internal 

 organ. (See Metastasis.) 



Rheumatism. — In no disease of the horse are there so many 

 errors and mistakes committed ; not only as to the nature of the 

 affection, but its mode of treatment. Horsemen and horse 

 doctors have not yet learned that there is a difference between 

 rheumatism and founder, whether acute or chronic, and how to 

 distinguish one from the other. The difference between acute or 

 inflammatory rheumatism and acute founder is this : In rheuma- 

 tism there is not only pain, but great fever and excitement, and 

 its seat is in the joints of the legs ; in founder we have pain, but 

 no fever, and the disease is confined to the feet alone. (See 

 Laminitis.) 



In chronic rheumatism there may be some excuse for such 



