INTRODUCTORY OBSERVATIONS. 7 



From this tabular statement, to the extent that it goes, we 

 learn that pulmonary disorders are more prevalent among 

 horses prior to and during the fifth year of their age, the 

 periods of their growth and domestication, than at any sub- 

 sequent time; after which age that they become obnoxious 

 to diseases of the bowels, and occasionally of the brain ; and 

 that ophthalmia is a disorder especially prevalent at the adult 

 or most vigorous stage of life. 



To enable us to pursue this interesting inquiry still 

 further — to show at what particular seasons, and months 

 even, these disorders, respectively, prevail, (though this is a 

 matter necessarily greatly influenced by weather and situa- 

 tion,) — I have, from the same "Register of Sick and Lame 

 Horses,^^ regularly kept for many years, drawn up the 

 following Table : — 



From this synopsis, it appears that pulmonary diseases 



