SERUM. 165 



Schirrus. — Pronounced sJcirrus, and signifying indu 

 ration or hardening of any structure, but now used only 

 when speaking of cancer, (which see.) 



Scouring. — (See Diarrhoea.) 



Scrotum. — The bag or skin covering the testicles of 

 the stallion, and is the seat of large watery swellings, as 

 a sequel to debilitating disease, or disease treated by 

 starving, bleeding, etc. If the swelling does not grow 

 less after extra feed is allowed, and a few iron powders 

 are given, the scrotum will have to be opened a little on 

 both sides to allow the fluid to flow out. Do not mistake 

 the swelling for scrotal rupture, (which see.) 



Scurf. — A scaly eruption on the skin of badly- 

 groomed and cared for horses, and is cured by good 

 grooming, good feeding, and, in some cases, a change in 

 stabling. 



Secretion is the product secreted or separated from 

 the blood. Secreted products are of two kinds : 



(1.) Excretions, or matter separted by animal bodies, 

 and thrown ofi" on account of their noxious or efi*ete qua- 

 lities. Examples — the urine, the dung, sweat, and car- 

 bonic acid gas from the lungs. 



(2.) Secretion is matter separated from the blood for 

 further use, and for the performance of various actions 

 in the living system. Examples — bile, saliva, etc. 



Sedatives. — Medicines which lessen pain, and should, 

 therefore, be called calmative^. Aconite is the most cer- 

 tain and successful sedative and calmative we have to 

 ofi'er, and will seldom disappoint the highest expecta- 

 tions, if used properly, and in good time. 



Serum. — The thin, colorless fluid, which separates 

 from the blood. 



