442 PHLEBOLITES. 



now. But you will observe that, by applying pressure beneath them, 

 they can be passed up the vessel. There is one which I now pass into 

 the superior branch of the jugular vein, but, on removing the hand, it 

 falls back again into its original situation. The other two tumours are 

 evidently not connected with it. It appears to me that these tumours 

 are somewhat of the nature of polypi, and are attached to the inner 

 tunic of the vessel by peduncles. If my supposition be correct, it 

 proves that there are no valves in this vein between the situation now 

 occupied by these tumours and the point to which they can be raised; 

 for, although valves would allow the blood to pass down, they would as 

 certainly prevent these tumours being passed in a contrary direction. 

 If the peduncle be two inches long, of course it will allow the tumours 

 to pass over a space of four inches. Elevating the whole of the tu- 

 mours evidently gives the animal pain. Thinking that the case might 

 not be uninteresting to the members of the Association, I ventured to 

 send the horse to the College, and, on the road, he unfortunately became 

 lame again in the near fore-leg. 



" ' It is interesting to inquire whether the lameness is referable to any 

 accident he has met with, for there now seems to be some slight inflam- 

 mation in the fetlock joint; or whether it is connected with these sin- 

 gular productions. But, taking the fact of its being an ambiguous case 

 in the first instance, and of its being recognised by a loss of power, or 

 a degree of lameness in this extremity; also of this horse not having 

 done any work from that period, and then having become lame again 

 when he had walked about four miles on the road hither, it does ap- 

 pear as if we might be almost warranted in concluding that some ob- 

 struction exists to the natural flow of blood in this limb, and which 

 may account for the lameness. I have been inclined to think that the 

 whole of the animal's illness has been referable to the existence of 

 these tumours; for, if they exist in the jugular vein, they may be pre- 

 sent in other vessels, and I think it is more than probable that they are. 

 Mr Spooner, your President, has informed me that in his dissections 

 he has detected similar productions in the abdominal veins. Here they 

 occur in the jugular vein of a living animal, and are, as you see, about 

 the size of a large nut. On grasping them firmly, they are found to be 

 very hard and unyielding. Although pressing them gives the animal 

 pain, yet it does not produce so much as we might have expected. The 

 proof that they are attached by peduncles is satisfactorily demonstrated 

 by the fact of their not falling down the vessel not going on with the 



