4 8o VETERINARY LECTURES 



be rubbed well into the parts every third day, and 2 drachms of 

 iodide of potassium, dissolved in a pint of cold water, administered 

 internally daily for six or eight days. If gangrene, or mortifica- 

 tion, sets in, the case usually runs its course in a few days, the 

 udder becomes a dark purple colour, and the animal dies of blood- 

 poisoning, or the glands may slough and drop off (pay. 816). 



813. Blind Teats. — Numerous cases are met with where the 

 animal has milked all right, and been perfectly correct up to the time 

 of drying, prior to having its next calf; but after calving one or 

 more of the teats are found " blind," and on examination, a small 

 hard knot is felt at the end, or in the middle of the passage of the 

 teat. The milk may be liberated with a syphon, but owing to the 

 instrument having to be introduced night and morning, local inflam- 

 mation is generally set up and the quarter lost. Such cases cause a 

 great deal of unpleasantness and litigation when the animals have 

 changed owners between the time of drying and calving. The cause 

 seems to be that a portion of milk has been secreted after the last 

 milking, the watery portions of which have become absorbed, leaving 

 a small piece of curded milk in the teat, which becomes organized 

 into a small knot, thus blocking up the passage. In these cases, 

 when the teat syphon is used, the instrument should be boiled for 

 five or ten minutes, thoroughly disinfected before introduction into 

 the teat, and well cleaned after use, or inflammation will be set up in 

 the gland and the quarter be lost. 



814. Paralysis of the Milk -Secreting Cells.— I have known 

 cases where 'a heavy milker, that has been noted for its large milk and 

 butter giving qualities, previous to calving having an udder which 

 was congested and much enlarged, yet after calving there was an 

 entire absence of milk in the gland. Sales of animals so affected 

 often cause unpleasantness between buyer and seller. 



815. Relaxed Teats. — Occasionally the teats lose tone, and 

 become unable to retain the milk, which runs off immediately it is 

 secreted. The best treatment for this is to paint the ends of the 



