fvr redorlng the Action of the Lungs. 375 



there is a free communication established between the hmgs 

 and the cylindei", to the exchision of external air: when, on 

 the other hand, the cock is turned the quadrant of a circle, the 

 communication loith the lungs is cut ojf\ and there is a freeclian- 

 nel opened between the cylinder and the external atmospheric 

 air." 



You will now observe, should the operator through hurry 

 or forgetfulness not retiu'u the cock irom the quadrant of a 

 circle to be parallel with its pipe, the unfortunate being on 

 whom IMr. Murray's plan of resuscitation has been attempted, 

 will be in a most pitiable situation ; because his lungs will be 

 in a partial vacuum, and cannot receive any supply of air 

 from the atmosphere. The operator in addition to this is 

 liable to two very considerable en-ors, the consequence of this 

 cock, which will be evident to all who may investigate the plan, 

 therefore I have no occasion to mention them. Mr. Minrav 

 says: " I have given mij reasons for rejecting the cumbrous and 

 troublesome modification obtruded. These reasons remain 

 inviolate." 



Gentlemen, I beg you to refer to his reasons, Phil. Mag. 

 vol. lix. p. ST^. You will there find that sojue one (for Mr. INTur- 

 ray does not tell who) immediately rejected some apparatus of his 

 inventirmfrom \t^ complete uselessness: — annexed to this, he states 

 it was also abandoned on two other conditions. I should have 

 thought that a machine that was rejected from its complete iise- 

 lessness, did not require two other conditions for it to be aban- 

 doned by such a man as Mr. Murray. But as he had there 

 stated that his useless invention was somewhat similar to mine, 

 — to settle this point, I asked him in my previous communication 

 to you, if his was not dissimilar to mine in sovte essential pait? 

 This, Gentlemen, was one of the questions I proposed to him, 

 which remain unanswered. You will therefore peiceive, that 

 this paragra})h of his refers to an invention of his, which some 

 one has condemned, and by his publishing the same has sanc- 

 tioned as completely useless. This I'cference nuist have been 

 nonsL-nsical on his part ; because it could only tend to remind 

 us of an invention of his that cannot be any credit to him. 



Mr. Murray states: "The Reply is a mere tissue oi'(jucs- 

 tions; fourteen marks of interrogation are interspersed ! A 

 very convenient mode of reply, it must needs be confessed. 

 For instance, I am asked how the individual becomes reani- 

 mated ? This is introduced as a species of climax to a most 

 disingenuous (I shall not term it williil or malignant) perver- 

 sion of my language. 



(jentlenieii. What a tissue of questions mine nnist liavc been, 



Ihal 



