An instance of this lesion is narrated in the fifth volume of the "Veterinary Record," from which the following extract of symptoms is drawn.

The animal fell from the upper floor of a house, down a well-staircase, into the hall, and when picked up was first supposed to be dead, as all power of motion was destroyed, and blood was escaping from both eyes and nostrils. The head was much enlarged from blood extravasated beneath the scalp; the pupils were dilated, vision lost, and there was total unconsciousness, although a painful whining noise was made. Pricking the skin produced no indication of pain being felt. There were occasional spasmodic contractions of the limbs, but no voluntary movement. The heart's action was slow and indistinct; the respiration stertorous.

Neither by external manipulation, nor by making an incision through the scalp down to the bone, could any fracture with depression be found. The animal made a good recovery.

The only thing to be apprehended after concussion is inflammation of the brain. One dose of Belladonna* every four hours would lessen the probability of such a result; and if febrile excitement should come on, Aconitum may be given alternately with it every two hours. Arnica is also a valuable remedy in some cases. The animal should be kept quiet and free from excitement.