1865.] of Cystic Entozoa in the Calf. 215 



ing in the countenance, no disturbance of the breathing or of the circula- 

 tion, no injection of the visible mucous membranes, no alteration of the 

 temperature of the body, no "staring" of the coat, nor rigors ; in short, 

 no indication of anything seriously wrong. These symptoms continued 

 throughout the next day with little variation ; on the third day they had 

 nearly passed away, and by the fourth had entirely disappeared. 



On the 25th of January, 1865, just five weeks after the first worm- 

 feeding, two hundred more of the mature proglottides of Tcenia media- 

 canellata were administered ; but one hundred of these worm-segments had 

 been previously immersed in a weak alcoholic solution, strong enough, it 

 was feared, to destroy the vitality of their contained eggs. The other 

 hundred proglottides were in beautiful condition, and for the most part ap- 

 peared to be thoroughly mature. Again the calf took the feeding readily, 

 and little or no force had to be employed in holding it during the adminis- 

 tration. However, directly on being loosed, it was observed to show 

 some symptoms of distress in the breathing, accompanied with trembling. 

 The feeding took place at 3 P.M., and, as the night promised to be cold, it 

 was placed with the cow in a closed and warm stable. On the following 

 morning it was noticed that the tremors had somewhat abated, but the 

 animal was evidently dispirited, and would every now and then grind its 

 teeth as if in pain. Its appetite was much diminished. By the next day, 

 however, all these diseased symptoms passed away, and the animal recovered 

 its ordinary healthy aspect. 



On the 1st of February, the seventh day succeeding the second worm- 

 feeding, there was a decided return of the nervous irritability ; but in a day 

 or two these symptoms again declined. Nevertheless the animal was not 

 quite right ; the coat began to lose its natural and glossy appearance, and 

 there was an evident loss of flesh. 



Feb. 8th. A marked change for the worse has taken place. The 

 animal is dull and dispirited ; refuses all food excepting milk, and of this 

 takes but little ; it arches the back frequently, and stretches the limbs in 

 a peculiar manner ; the breathing and the pulse have increased, and at in- 

 tervals slight tremors are observable, more particularly of the muscles of 

 the neck and shoulders. 



Feb. 9th. All the unhealthy symptoms are more marked. The pulse 

 numbers 120, and the breathing 35 in the minute. The tremors are more 

 continuous, and the condition of the animal is fast declining. 



Feb. 10th. Still worse. The calf is so ill that we fear a fatal result. It 

 takes little or no notice of the cow, and cannot be induced to suck. The 

 eyes have a peculiar staring expression. 



Feb. llth. The severity of the symptoms has somewhat abated this 

 morning. The animal is rather more lively, and will now and then take a 

 little milk. The breathing and pulse, however, remain rapid. The tre- 

 mors, though still frequent, have diminished in intensity. Towards the 

 after part of the day the improvement became more marked ; therefore, 



