Cartilaginous Tumours. 341 



acromion and coracoid processes of the scapula and part of the clavicle. 

 The patient made an excellent recovery. The tumour weighed twelve 

 pounds. It was macerated, but all the parts fell to pieces. 



This has probably been a case like the previous one, and 

 the nodular character of the cast still further confirms this view. 



G. C. 1789. 

 Presented hy James Syme, F.R.C.S.E. 



6. 359. Chondroma of the Humerus. — Photograph of Mr 

 Syme's illustration of the patient from whom the above tumour 

 was removed. G. C. 3400. 



6. 360. Chondroma (?) of the Humerus.— Plaster cast of a large 

 tumour, apparently of the upper end of a left humerus, to 

 illustrate the above. 



Prom its nodular character and position, it has probably 

 been a tumour similar to the two previous ones. 



P. P. C. 2920. 



6. 361. Chondroma of Thumb and Forefinger.— Sections 



of cartilaginous tumours growing from the metacarpal bone of 

 a thumb and the first phalanx of a forefinger — in spirit. 



The patient, when a boy, had his hand crushed, and afterwards the 

 tumours formed gradually. 



The sections show that the tumours are composed of 

 numerous small lobules of hyaline cartilage, each apparently 

 surrounded by a very delicate stroma. Some of the nodules 

 seem to have been softening. The surface of each tumour is 

 formed by a thin layer of bone continuous with the bone from 

 which the tumour has grown. Imperfect and irregular 

 appearances of septa are seen here and there passing inwards 

 from the interior of the bony shell. B. C. i. 6. M. 32. 



6. 362. Chondroma of Little Finger.— Metacarpal bone and 



