212 
Ansemia in Sheep, known also hy the terms 
of the act require a much longer period than is ordinarily 
needed by perfectly healthy animals for the establishment of 
normal functional activity. Coincidently with this lowering 
of vital power in the ewes, a similar want of natural vigour and 
stamina is observable in the lambs. These may be full-sized, 
but they want vigour ; their entire system seems to be deficient 
in tone and healthy development, and they are more amenable 
to any adverse influences which may be encountered. 
Although it is abundantly clear, both from extended clinical 
observation and special experimentation, that errors in diet, 
resulting in an absence of healthy tissue-forming elements in the 
food received, are the great or only inducing factors in the produc- 
tion of anaemia, it is not always easy to demonstrate the nature of 
this want, nor yet its mode of operation in the production of the 
varied phenomena observed during life or on examination after 
death. The most obvious defect in these deleterious diets is a 
deficiency of the albuminous agents. This want, actual or 
relative as compared with some other scale or system, may seem 
inadequate to account for the very serious results which follow 
its continuous employment, and is not always clearly brought 
out by any examination, chemical or physical, of either grass or 
roots serving as food, or of the soil from which these are pro- 
duced. Still there seems no doubt that upon this comparatively 
trifling difference in the food-materials of an excess of moisture, 
and a lessening of the percentage of flesh-forming constituents ; 
and in the soil of a want of salines, or in some instances of an 
excess of mineral salts, may depend the imperfect manufacture 
and want of tissue-formative power of that upon which ali 
structures depend for sustenance and life, the blood. 
Anatumical Characters or after-death Appeararices. — The 
diseased conditions observable in an ordinary examination of 
cases of anaemia which terminate fatally are neither numerous 
nor variable. The most obvious are in association with the 
soft or liquid tissues, chiefly in the muscular and circulatory 
systems. With the former of these the main features are a 
deficiencv of bulk, consistence or firmness, and of colour ; this 
wasting, although most observable in the voluntary muscles, is 
not entirely confined to these, — the great mass of the involuntarv 
muscular tissue forming the alimentary tube occasionally ex- 
hibiting like characters. With tiiis general atrophy of elemental 
structure we have an evident disposition to interference with 
growth and functional activity concomitant with, and resulting 
in, degenerative changes. In this way we account for fattv 
metamorphoses connected with the internal organs, as the heart, 
kidneys, and liver. This degenerative action, or replacement of 
tissue-elements by those of a lower grade, is usually well marke»l 
