A dog, aged three years, was very subject to epileptic fits. After a considerable period the fits would cease. I have often seen these fits cease with the complete evolution of the adult teeth. The last fit was a very strong one, and was followed by peculiar symptoms. The animal became dispirited; the eyes lost their usual lively appearance, and the eyelids were often closed. The dog became very drowsy; and, during sleep, there were observed, from time to time, spasmodic movements, principally of the muscles of the head and chest. He always lay down on the left side. When he walked he had a marked propensity to turn to the left. The animal was placed under my care.

* "Veterinarian" of 1843.

I employed purgatives, a seton in the back part of the neck, and the application of the cautery to the left side of the forehead; but nothing would stop the progress of the disease, and the dog died in the course of two months after the last epileptic fit. During his abode in my establishment he had the run of the garden when it was fine weather.

From the drowsiness that he had when he was shut up, he almost always recovered himself when he had his liberty, and especially while his strength remained. He was constantly in motion, and perpetually walking up and down from right to left. This terminated by falling from mere weariness; but he presently rose again and recommenced his travels, and always with a quick pace. Latterly he began to take a circular course, instead of following that of the walks which were rectangular. He then traversed the squares, totally regardless of, or not seeing, the obstacles that were in his way.

When he was stopped by some obstacle, he at first endeavoured to make it give way; but if it resisted his efforts in a circular direction he turned aside, but always towards the left The nearer he approached his end, the smaller were the circles that he took; and, in the latter period of his existence, he did little more than turn, as he would on a pivot. When the time arrived that he could walk no more he used to lay himself down on his left side, or, if we put him on the right side, he turned his head always to the left.

During the whole of the case I did not observe any very evident sign of palsy. For a considerable period he had eaten with appetite; but nevertheless he grew thin from day to day, although he was too well fed by the owners, who continually crammed him with food, notwithstanding my efforts to prevent it.

At the post-mortem examination I found a remarkable thickness of the meninges on almost the whole of the left lobe of the brain.

The dura mater, the two leaves of the arachnoid membrane, and the pia mater, did not constitute more than one membrane of the usual thickness, and presented a somewhat yellow colouring. The cerebral substance of the left lobe appeared to be a little firmer than that of the right lobe.

The scissures of the cerebral circumvolutions were here much less: deep than those of the other side. The red vessels which ran in the scissures were of smaller size, and, in some places,, could scarcely be discovered.