British Association for the Advancement of Science, 3% 
100 tons, without damage; but beyond this it would not be 
safe. He had tried it repeatedly in asthma. The principle was: 
applicable topically, and parts of the body could be submitted to 
the action of the machine, modified so as to be suitable to them. 
He exhibited a contrivance, of along tin tube, made air-tight, 
and with a piece of wet bladder round one end, which was open ; 
at the other end, which was closed up, a small exhausting air- 
pump was placed. A patient, with a paralytic wrist, put his arm 
into this; the wet bladder was tied round his arm at the top, to- 
make it air-tight, and the atmosphere was then pumped out of the 
tube. The atmospheric pressure being taken off, the limb be- 
came turgid, the circulation was increased, and the part affected 
was soon cured. ‘There was another adaptation of the same con- 
trivance to the limbs, to draw off the effect of congestion of the 
brain ; and one to stop hemorrhage in an injured hand, limb, or. 
other oxieemnity. An exhausting pump was fixed to the end of a _ 
bladder, the limb was put into the bladder, and the neck then tied 
round to make it air-tight. The air was then completely ex- 
hausted by means of the pump, which compressed the bladder so 
close to the skin as effectually to stop even the pores of the skin. 
The same contrivance of a bladder and exhausting pump was 
also applied for the cure of ulcerated legs, by preventing evapo- 
ration of the ulcers, by exhausting the air, and making the col- 
lapsed bladder adhere tightly all round. For irregular surfaces 
he thought the instruments of particular value, since no dry-cup- 
- ping could be used there. Jf this plan had been known when 
those melancholy deaths from dissection cuts took place in Dub- 
lin, and dry-cupping could not be had recourse to, it would have 
been fortunate. ‘The machine would be particularly advantage- 
ous in withdrawing blood from particular parts to others more re- 
mote. Thus, in cases of congestion of blood in the head, where 
bleeding had been carried to such an extent that it would not be 
safe to carry it further, owing to the great general loss in the cir- 
culation, blood might be made to accumulate in other parts, as in 
the legs. The case of a well-known brewer in Dublin was treat- 
ed on this principle, and recovered. Sir James then enumerated 
the kinds of cases where the apparatus might be used,—asthma, 
defective external circulation, aneurisin, tumors, paralysis, &c. 
Structure of the Brain.—Mr. Carlile further adverted to the 
particulars of several dissections of the brain in his possession, 
