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MR. J. BLAND SUTTON ON DISEASES IN [Apr. 19, 



1. On some Specimeus of Disease from Mammals in the 

 Society's Gardens. By J. Bland Sutton, F.E.C.S., 

 Erasmus Wilson Lecturer on Pathology, Royal College 

 of Surgeons of England. 



[Eeceived February 25, 1887.] 



In this communication I again venture to bring under notice a 

 few specimens of diseases obtained from mammals which have died 

 in the Society's collection during the past twelve months. Those 

 only have been selected which appeared to me to possess a zoolo- 

 gical as well as a pathological interest. 



On several occasions I have drawn attention to the frequency of 

 rickets in mammals living in confinement in this country, and have 

 described some of the peculiar effects due to this disease manifested 

 by the skeleton. Let me now describe two additional specimens. 

 "V\'hen the skeleton is thoroughly softened by rickets, the ribs are 



Transverse section of tbe tborax of a rickety Monkey. 

 H. Heart. L, L. Lungs. T. Trachea. (E. (Esophagus. A. Aorta. P. Pericardium. 



as yielding as though composed of whalebone. In consequence of this 

 they yield to the pressure of the atmosphere and encroach upon the tho- 

 racic cavity, displace the heart, flatten the lungs, and disturb the viscera 

 of the chest generally. In my drawing (fig. 1) a transverse section of 

 the thorax of a Monkey severely affected by rickets is shown. In 

 this drawing the lungs are seen as two narrow bands, the trachea ia 

 displaced to the right side, the oesophagus is compressed against the 

 spine, and the heart is pushed forwards, and is in contact with the 

 thoracic parietes all round, instead of hanging almost free in the 



