TivcJily- third Communication from Dr. Thornton. 33a 



me that it was not the mere mechanical collision of the air 

 striking the in(ernal surface which so forcibly rends them 

 asunder, but a compound effect of that and electrical affi- 

 nity together; which, being corroborated by so many 

 actual experiments, makes me believe the phainomenon, of 

 these little philo.-ophical tenigmas is nearly explored. And 

 alihoiigh I would not say the subject is entirely exhausted, 

 yet this solution has so satisfied my iiiin<l,, that I cannot 

 think it any longer a desideratum. 



I remain, sir, 

 Tookv-street, "^ o^r obliged ficrvaut at command, 



Sept. 14, 1805. JoHnSnART. 



p. S. Since the publication of my ■paper in the 86th 

 number of the Philosophical Magazine, from a comparisoa 

 of the creature therein described with what I have met with 

 in Dr. Shaw's work, I am inclined to think it is a larva of 

 ithe genus dytiscus, of the order coieoptcra. It mio;ht not 

 improperly be denominated ranumalgus^ ox frog-sucker« 



LI. TiveJit If -third Communication from Dr. TttORNTON- 

 To Mr. Tilloch. 



Sept. 14, 1805. 

 DKAR Sin, No. I, Hinde-street, Manchester-square. 



X ERMiT me the honour of continuing, in your excellent 

 magazine, facts confirming the propriety of employing 

 pneumatic medicine. 



Case of C<)nsumptic-;i aired hy Hydro-azotic Gas. 

 James Davis, aet. 25, living with Mr, Chambers, banker. 

 Bond-street, as groom, had all the marked symptoms of a 

 confirmed galloping consumption, violent cough, frequent 

 pains in the side, shortness of breathing, the expectoration 

 very copious, of an opaque appearance, night sweats con- 

 stantly, wasted almost to a shadow, and extremely weak, 

 arising i'fom a cold proceeding from putting on a damp 

 shirt, and being wet through, in March 1S05. llie vio- 

 lence of this disease had existed two months. lie was re- 

 commended by .Joseph Workman, who had bwn similarly 

 affected, servant of captain Kond, also cured by tlic same 

 plan. This patient inhaled the hydro-azotic gas, and he 

 took at the same time tonic medicines, as bark, columbo, 

 with niyrrh, with occasional aperients j and, Ibllowing 

 Y 4 tllig 



