204 
RONTGrEN RAYS. 
had apparently pierced the skin, but could not find it. I then photo¬ 
graphed it, and was able to tell him “ this needle is very faint, so that 
the probability is it will be found on the part of the joint away from 
the plate ; I think we had better cut there.” We then cut down upon 
the part of the knee-cap away from the plate and there was the needle 
in the very spot that the photograph told us. That is about one of the 
most useful things that I have seen the process do. Here are two feet 
with needles in ; it was quite easy to draw a line across the foot where 
we saw the needle, then we drew another line at right angles to that 
and at the junction of the two we found the needle. Now you not only 
can get needles out but you can distinguish inflamed from healthy 
joints by this process. Here is a case of the two hands of a woman who 
had a bad accident to one of her wrists, and very much inflammation 
followed, especially of the bones and joints of the hand. You see one 
finger is crooked and the small bones of the wrist are glued together by 
inflammation. If you raise up the picture and look underneath it you 
will find one of the bones of the other hand, they are all quite distinct 
from one another. 
Here is another case, and a very good one, of an excision of the knee 
joint, with a wire put in to keep the bones in their places. Here is a 
very pretty (!) photograph of a face. This is the face, you will hardly 
believe it, of a very good-looking boy, about 15 years of age ; but of 
course only the bones shown. He has a tumour in his jaw, and you 
can see the place where the tumour is, looking like a hole in the bone. 
This other hole is his eye, or rather its socket. This projection is not 
his nose, it is his upper jaw ; the nose is represented by a hole above. 
The jaws were kept open by a piece of cork, but this does not show at 
all as.the Rontgen rays go through it. 
Here is another case, very like the one Mr. Webster showed you of 
Mr. Maurice. A woman had had her elbow dislocated for five months. 
It was treated, in a large country town, as a fracture. She came to the 
Miller Hospital with the arm very painful, swollen and fixed in a 
straight position. A photograph showed merely a dislocation ; we put 
it in, with some difficulty, under chloroform ; but it does not seem to 
be quite so well in as the one shown you by Mr. Webster, because 
during the five months a thick material (lymph) formed in the joint, 
which prevents the bone from going quite into its place. Still there is 
a good movable joint. 
I think, ladies and gentlemen, that this process will become more and 
more useful as time goes on and we find out more about it, and get 
better tubes and other apparatus. 
It was supposed that the fluorescent screen would be the most useful 
part of the process, but at present it scarcely comes up to the expecta¬ 
tions formed of it. It is very pretty and shows the bones of the 
extremities very well ; but it does not show much of the bones of the 
body, for one reason because one has not yet been made large enough. 
I will not weary you by saying much more, but I will remark that 
anyone who meets with an injury to a bone or near to a joint in the 
future will be very foolish if he does not have it photographed, 
especially after it has been set, to make quite sure that it has been 
properly done. 
I am obliged to you, ladies and gentlemen, for the patience with 
which you have listened to me. (Applause.) 
