558 



Tuberculosis. 



white flakes and curdled masses appear and finally the secretion 

 assumes a watery appearance. 



According to Stroll the milk obtained fiom the tnl)ercnlons quarters is fre- 

 quently alkaline in reaction, contains an increased amount of salts of soilium, 

 chlorine, lime and phosphorus, the fat is diminished and the milk sugar present in 

 only small quantities or absent altogether. The nitrogenous contents consist of 

 par'aglobulin and albumin instead of casein and albumin as in normal milk. 

 Monvoisin also found the acidity considerably reduced (from 1.4 to 2.0 g. of lactic 

 acid — normal contents per liter — to 0.80, 0.24 and even 0.12 g.) which is in contrast 

 to ordinary inflammations of the udder where the acid content is usually increased 

 on account of decomposition of lactose. The percentage of fat may be reduced 

 from the normal (being instead of 3.5-4.5% only 1.5%). Milk sugar may lie 

 almost entirely absent. The freezing temperature remains about the same. 



According to Ostertag the examina- 

 tion of the mammary lymph glands is best 

 accomplished by grasping with the index, 

 middle and ring lingers the skin of that 

 portion of the lateral faces of the udder 

 which lie opposite the inner sides of the 

 thighs, beginning at about the middle 

 of the udder and pushing upward, when 



Fig. 90. Tuberculosis of the greatly en- 

 larged left hind quarter of the udder. 

 (Ostertag) . 



Fig. 



»1. Palliation of the manuuary 

 lymph glands. 



the lymph glands may be palpated from without and from below (Fig. 91). These 

 glands lie in the angle which is formed by the upper and posterior border of the 

 udder. As a rule the posterior border of these glands does not project beyond 

 the posterior border of the udder. 



To confirm the diagnosis it is advisable to cleanse and disinfect the udder 

 with soap and water, rinse with alcohol and, with the aid of a harpoon, remove 

 a portion of tissue from the affected region for bacteriological examinations (see 

 pp. 571 and 574). 



Tuberculosis of the kidneys or more properly speaking, 

 tuberculosis of the pelvis of the kidneys, is indicated by the 



