145 
A GUTTA PERCHA TRACHEOTOMY TUBE, &C. 
Reeve, I have nothing to say; I know how easy it is to alter 
a conclusion when the one-sixteenth of an inch depends on it ; and 
I am satisfied that I have stated enough to account for that dif- 
ference between Mr. Reeve’s plan and mine : who is right and 
who is wrong, let others determine. In conclusion, I express my- 
self ready at any moment to repeat these experiments in the pre- 
sence of Mr. Reeve or Mr. Percivall. 
Having taken up so much of your valuable space, and having 
so fully expressed my opinion, I shall not consider that I am 
again justified in writing on this subject. 
A GUTTA-PERCHA TRACHEOTOMY TUBE AND 
CATTLE PROBANG, 
Invented by Mr. Geo. MURRAY, Swansea. 
To the Editor of" The Veterinarian.” 
Dear Sir, — “NECESSITY,” they say, “is the mother of inven- 
tion.” About two months ago I was greatly put to the shift for 
shield, and fitting on the tube be- 
tween the neck and the shield : 
it is intended for the same pur- 
pose as Mr. Gowing’s screw. 
VOL. XXIII 
X 
