VOL. XIX.^ PHILOSOPHICAL TRANSACTIONS. l65 



life continuing after the loss of a great part of the brain, I shall add the fol- 

 lowing observation. 



An Observation of one Hemisphere of the Brain sphacelated, and of a Stone 

 found in the Substance of the Brain itself. By Edivard Tyson, F. R. S. 

 N° 228, p. 535. 



Dec. 12, ]688, I was desired to be present at the opening of Mr. A. About 

 1 months before, he had received, in a quarrel at the tavern, a great bruise on 

 his head by a quart pot. But at first neglected the use of means, till at last he 

 was forced to betake himself to his bed. Dr. Morton was sent for. He found 

 him to complain of a most violent pain in his head. He sometimes vomited, 

 sometimes was in convulsions, sometimes in the day he would have a great 

 stupor upon him ; and when he awaked would be delirious.. His swallowing was 

 difficult, and he would grind his teeth ; his eye-sight afterwards failed him, and 

 he lost his memory : and on the least motion of his body would faint away ; and 

 in the whole course of his distemper was feverish. 



On opening his head, I observed the blood-vessels of the meninges very much 

 extended ; but what surprized me more was, to find the greatest part of the left 

 hemisphere or side of the cerebrum, or brain, to be perfectly rotten or sphace- 

 lated, not having the least consistency, but purulent and soft ; nor could I dis- 

 tinguish the medullary substance from the cineritious, but all of a dark reddish 

 colour ; so that I wondered not at the symptoms he complained of, but rather 

 that he lived so long ; there being so considerable a part of the substance of 

 the brain itself wholly corrupted. 



In the ventricles of the brain I observed a great deal of water ; but the greatest 

 surprise of all was the protuberantia orbicularis, called the testis, on the left 

 side ; which was as large as a nutmeg ; for, on dissecting, I found in a purulent 

 matter there a chalky stone, about the size of a cherry-stone, but flat, and not 

 very thick, and in taking it out I found it friable. 



There are frequent observations of stones found in the glandula pinealis, and 

 I have seen the glands of the tunica choroides petrified ; but to find stones in 

 the substance of the brain itself, I think is very rare. 



Part of a Letter from Mr. Octavian Pulleyn, dated Rome, March l6, 1696, 

 giving an Account of an Inscription found there in the Language of the Pal- 

 myreni; and another in the Etruscan Language, found on an old Urn. N°228, 

 p. 537. 



Some rude and unintelligible characters, without description or explanation. 



