232 Diseases of Bone. 



The surface of the bone is covered with irregular pro- 

 jections, like those in ]S[o. 6. 63. and others. 



W. C. G. 58. 



6. 77. Development of Bone on Ribs from Chronic 



Empyema. — Portions of five ribs— macerated, to show the 

 above. 



T. W. , a sailor, 26 years of age, was admitted to Ward 18, Royal 

 Infirmary, Edinburgli, on 3rd April 1890. He had good health till 8 J 

 months previously, Avhen he had measles, followed by cold with rigors 

 and pleurisy. "The left side of the chest swelled up." Breathing was 

 very difficult, and the patient very weak. Three weeks later the pleura 

 was incised, and three pints of what seems to have been pus evacuated. 

 When he was admitted, there were several septic sinuses near the inferior 

 angle of the scapula leading down to bare bone on the fourth, fifth, and 

 sixth ribs, and communicating with the pleural cavity. Mr Cathcart 

 removed portions of five ribs, and the patient made a good recovery. 



The sections show the original outline of the ribs, with, new 

 bone on their inner surfaces. In some places the new bone is 

 compact ; in others it is cancellous, with a compact lining. 



G. C. 3175. 

 Presented hy Charles W. Cathcart, F.R.C.S.E. 



2. Injlammation of Bone produced hy mechanical or chemical 

 irritation. Specimens vmnted. 



3. Infiammation of Bone froduced hy 'pus-forming organisms. 



A. "Where the Organisms have reached the Bone through the 

 Circulation. 



a. Where important changes have not had time to develop. 



6rj78. Acute Suppurative Periostitis of the Tibia— Right leg 



and portion of a foot — in spirit, showing the above. 



Three weeks before admission to the Royal Infirmary, Edinburgh, 

 the patient, a boy about 7 years of age, received a blow on the leg. This 

 was followed by great pain, and drawing up of the leg, with sleeplessness 

 aud fever. In Professor Annandale's ward, the periosteum was freely 



