MORBID AI^ATOMT. 39 



The milk when drawn from a cow in an advanced state of the 

 disease is altogether creamy, resembling in some cases melted butter. 

 It has a peculiar persistent .taste, owing probably to a deficiency in 

 sugar. It decomposes rapidly, and under the microscope consists of 

 fatty cells crowded and overlaying one another (PI. XI, fig. 1 ; as 

 compared with the appearance of healthy milk in the microscopic 

 field, fig. 2.) 



IX. Tissues, &c. The serous membranes, when the disease has no 

 complications, are healthy and with no efiTusion into their sacs. 



The cellular condition of the loins in some animals is highly 

 emphysematous, a condition occurring frequently in life. But it is a 

 dangerous complication ; one of the cows under treatment died from 

 suffocatio7i simply from this cause. 



X. Udder, Skin*, &c. The structure of*this last is unimpaired* 

 the diminished secretion of milk is to be referred to systemic causes. 

 In one third of the cases examined by Dr. Smart, an eruption 

 appeared very generally diffused over the skin* and most abundantly 

 in the flanks. The eruption as seen in the udder had a vesicular 

 character, making its appearance on the 5th to Tth day. 



These eruptions were papules and not pustules, as observed by Dr. 

 Thos. Hillier, M. D., medical ofiicer of health (2d Rep., p. 33), 

 though he did not trace the eruptions to their conclusion. 



XL Feet. The lining membranef of the cleft of the hoof is very 

 highly congested, with desquamation, &c., similar to the other external 

 lesions of mouth and vulva. 



XII. Flesh. This possesses a mulberry or dark claret color, with 

 the remarkable quality of irridescence or of changing color. The 

 color of the fat is of a dark and dusky yellow, becoming more marked 

 after exposure to light and air. Both muscles and fat exhibit an 

 unusual degree of shrinkage. (PI. XII, fig. 1.) The muscle, however, 

 after a period of exposure, loses the first characteristic distinction 

 from healthy beef (PL XII, fig. 3), and the mulberry hue is insensibly 



* The surface of the skin over the neck and withers is often moist or greasy, from an abundant 

 sebaceous secretion. There are no vesicles and an entire absence, as a rule, of pustules. In 

 some cases are seen somewhat flattened nodules presenting the characters of false cow-pox. 

 GuEBSENT, in his " Essai sur les Epizootiques," speaks of this eruption m mild cases, &c., in the 

 form of small eminences of conical form, analogous to false vaccine. Prof. Geklach noticed this 

 appearance rarely in Great Britain, but more frequently in Holland, where the disease was less 

 virulent. (Gamgee, &c., p. 50.) 



t The great capacity of this membrane for the diseased condition, naturally leads to the infer- 

 ence that it is highly capable of absorbing the virus from urine, dung and other ezayise of 

 Rinderpest subjects, with which it may be brought in contact. 



