372 
THOMPSON YATES LABORATORIES REPORT 
History of Cow 
For the following history I am indebted to Mr. Eaton Jones, Veterinary 
Superintendent of the Liverpool Corporation, who called me in to examine with him 
the cow, and to witness the post-mortem. 
' On October 29, 1901, I examined the animal and found her to be exhibit- 
ing all the clinical symptoms of being affected with Tuberculosis, both general 
and of the udder. She was an aged cow (about nine or ten years), in an 
emaciated condition, hide-bound, her coat harsh and dry, and suffering from a 
husky cough, in addition to having chronic induration of the near hind 
mammary gland. Her past history, as far as I can gather, is as follows : — 
' The man bought her about last June, and she was then in a fairly good 
condition ; but he noticed a small enlargement on the near hind mammary gland 
about the size of a pigeon's egg, which gradually grew larger until it had attained 
the size of a cocoanut. This enlargement on manipulation was of a peculiar 
nodulated character resembling a bunch of nuts. 
She was a good feeder, but despite this, rapidly lost flesh, always had a 
cough, her faeces were hard and dry, and ordinary purgatives had no effect upon 
her. 
During the time she was in the shippon she gave about three gallons of 
milk a day, the milk being very hard to draw, giving an equal quantity from the 
affected gland, which was likewise of the same colour and consistency as ordinary 
milk.' 
Post- Mortem Examination 
IS 0 tuberculosis of the peritoneum or pleura. 
Spleen normal. 
Kidney normal. 
No enlarged lymphatic glands. 
Lungs free from any thickenings or nodular deposits with the exception of a 
hard calcified area of about the size of a pea. 
Udder. Scattered in the substance of the lower portion of the breast tissue were 
some dozen hard nodules of the size of small filberts, and which during life 
felt like hard enlarged lymphatic glands. Cut into they were clearly 
differentiated from the secreting tissue, and presented in their interior small 
dirty yellow irregular masses, which were hard and gritty to the knife. 
From the necrotic looking material in the centre of these masses, coverslip 
preparations were at once made with a view of demonstrating the suspected 
tubercle bacilli, none were, however, found ; but in order to make certain, 
inoculations were made. 
With the exceptions of these nodules all the organs appeared healthy. 
