30 DISEASES OF URINARY ORGANS. 



FUNCTIONAL DISORDERS OF THE URINARY 

 ORGANS. 



DIURESIS. POLYUKIA. EXCESSIVE SECRETION OF 



URINE. DIABETES INSIPIDUS. 



By the term diuresis, a variety of conditions is indicated 

 in which there is an excessive secretion and discharge of 

 urina The different forms of diuresis may be included under 

 two heads the simple and complicated. 



Simple diuresis is that frequent and abundant discharge 

 of urine occurring principally in horses, but occasionally 

 affecting other domestic animals. It is usually an enzootic 

 disorder, manifesting itself on a farm, in a city, district, 

 county, or country. Occasionally a single animal here and 

 there may be affected, but more frequently many animals are 

 seized with similar symptoms. 



The causes of this disease are such as lead to the produc- 

 tion of musty and deteriorated oats and hay. Wet seasons, 

 during which great difficulty has been experienced in making 

 hay, have: been frequently attended with very general out- 

 breaks of this disorder. If oats are injured and allowed 

 to get damp, are left to germinate and get musty, they 

 are eminently calculated to induce this disorder. A very 

 remarkable prevalence of the malady was witnessed in the 

 vicinity of Paris in 1850, in the Rhine Provinces in 1845, in 

 Holland in 1851, and repeatedly in Scotland. It is occasion- 

 ally seen in all large towns, when damaged foreign oats have 

 been sold in considerable quantities. Army horses fed on 

 hay and oats supplied by contractors, who buy up anything 

 cheap enough for their supplies, are liable to severe attacks. 

 Moiroud and Leblanc have noticed in France that horses that 



