544 Diseases of Muscles, Tendons, etc. 



phragm, formerly described as "a peculiar condensed state of 

 the diaphragm " — in spirit. 



The condition seems to be one of great thickening — possibly 

 tubercular — on the peritoneal aspect of the diaphragm, while the 

 muscular fibre seems pale and firm. Possibly the peritoneal 

 thickening may have interfered with the movements of the 

 muscle, and so led to its degeneration. G. C. 611. 



Presented by Professor John Thomson. 



9. 6. Degreneration of Muscles of Arm.— Transverse section 



of a forearm — in spirit, illustrating the above. 



"The integuments were indurated and tuberculated from the 

 middle of the arm to that of the forearm, and the elbow and muscles 

 of the forearm rigid. The hand and lower part of the extremity were 

 much swollen and cedematous. On the forearm was a considerable ulcer, 

 with abrupt ragged edges and foul surface. 



"The arm was amputated close to the shoulder joint, where the 

 parts appear sound, but after some months a similar disease attacked the 

 cicatrix of the stump, and gradually extended till the patient died." 



" The section exhibits the skin much thickened and having 

 the appearance of scirrhus ; the muscles appear for the most 

 part converted into a white substance like cartilage, retaining to 

 a certain degree the fibrous form of muscle ; in other parts the 

 muscle is seen pale, as if gradually passing into the cartilaginous 

 state. The adipose and cellular membrane have disappeared, so 

 that the muscles appear to be matted to each other, and to the 

 diseased skin. The larger nerves and blood-vessels are seen 

 passing through the parts unchanged." 



This may have been a general tuberculosis of the skin, 

 with degeneration of muscle following disuse. 



G. C. 221. 

 Presented fcy W. Newbigging, F.R.C.S.E,, and Professor J. W. Tuenee. 



III. Inflammatoey Diseases. 



9. 7. Abscess in Muscle. — Portion of a muscle, possibly rectus 

 femoris — in spirit, illustrating the above. 



