484 GENEKAL DISEASES. 



will be found to contain clots, while the fluid between may be 

 slightly watery and is invariably of a very dark colour. 



" On removing the front of the chest, the pleurae may be seen 

 to be occupied by a large amount of blood-colom*ed fluid. 



^* On the surface of the lungs it is common to And a layer, 

 more or less thick and diflused, of a yellow, gelatinous material, 

 consisting of coagulated blood serum. The lungs are as a rule pale 

 in colour, unless the animal has been severely ridden previous to 

 its death. On the surface will be noticed a large number of dark- 

 coloured lines which seem to pass over it and appear like small 

 rivulets. If slices of the lungs be made with a knife and held 

 up to the light, it will be noticed that the lines in question are 

 transparent and of a yellow colour. They consist, in fact, of the 

 yellow serum, exuded in this situation, that has coagulated, and 

 they occupy the lines of division between the lobules of the lungs 

 and which in health ought to be scarcely apparent. ... In 

 the dikkop form, the chief sign is the swelling of the head, neck, 

 or tongue. In this form the lungs may be almost or absolutely 

 unalfected to the naked eye. 



" The spleen as a rule is enlarged and deeply congested, and 

 over the whole surface may be seen small haemorrhagic points. 

 On section the capsule immediately retracts and the substance is 

 seen to be very dark in colour, owing to the venous engorgement" 

 (Edington). 



McFadyeain points out that " the most constant of the lesions 

 present in animals dead of horse-sickness is an intense congestion 

 of the mucous membrane of the right half of the stomach." Lieu- 

 tenant Coley, A.V.D., who had four seasons' experience of this dis- 

 ease, states, in the " Veterinary Record," that this congestion is 

 seen only in a few cases. 



THE DISEASES WITH WHICH HORSE SICKNESS MIGHT 

 BE CONFUSED are restricted as a rule to anthrax (p. 471), con- 

 gestion of the lungs (p. 364), and inflammation of the lungs 

 (p. 353). 



TREATMENT has proved up to the present to be of little or 

 no avail, with the exception of that by Lieutenant Coley, who 

 gives intravenous injections (p. 636) of-— 



Iodine... ... ... ... ... 4 grains. 



Iodine of potassium ... ... ... 15 ,, 



Glycerine ... 1 drachm. 



Boiled water ... ... ... ... 1 ,, 



Out of 31 horses suffering from this disease, he had 17 recoveries. 



