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and as the age advances even that is lost. Further 

 inspection also show^s additional changes in position, 

 shape, and tint. The grooves are broad, deep, 

 and vi^ell marked by their dark colour. Betvi^een 

 the upper incisors there are interspaces in which 

 the food has accumulated and become black, giving 

 to the mouth the appearance represented in the 

 coloured plate. The upper tush, which is now of a 

 brownish hue, may be worn to the gum, and the 

 lower continue long and surrounded by tartar, or 

 both may be reduced to mere stumps. The tongue 

 protrudes greatly; the membrane of the mouth 

 seems hard; and no longer vascular, it is thrown 

 into wrinkles. The edge of the lower jaw is sensibly 

 retracted, and its sides are flattened or narrowed. 

 The general appearance indicates the decay of nature. 

 Here again, however, nothing is positive, save the 

 yellowness of the teeth and the protrusion of the 

 tongue. The general character of the animal is of 

 more value than the indications of the mouth ; and, 

 persons familiar with horses can, sometimes by this, 

 guess the age of an animal with the same approach 

 to accuracy, which most people exhibit, when pro- 

 nouncing the extent of an individual's life, by simply 



