356 Ot^ THE GASfeOUS OXIDE OF AZOTfe. 



No. 4 had the fame faccharine tafte with the precedin^j 

 and retained the impreffion from ten o'clock in the morning 

 till after midnight. He experienced vertigoe?, and his legs 

 trembled under hi^ during the remainder oF the day. 



No. 5, the fame faccharine tafte. On quitting the bladder^ 

 he had a dizzinefs of fight, which was fucceeded by a fenfa^ 

 tion of great pleafure throughout the body. His legs were 

 weakened. 



No. 6. Saccharine flavour throughout the day ; tingling in 

 the ears; legs tottering, and the flomach opprefled. All that 

 he experienced was rather painful than agreeable. 

 Receiving the ^" order to afcertain wliat influence the mode of breathing 

 gas from a blad- from a blarkl^r might have on the foregoing refults, the parties 

 fiuence on^thc' ^'^""^ requePced to infpire common air in the fame manner.-^ 

 lefult of the ex- They were all mechanically fatigued by i(, and nothing more. 

 o'"™^"^ d'f '^''^ bladders were next filled with oxygen gas, and applied 

 fered from com- as before lo the fame perfons, who found only a flight differ- 

 mon air only by ^^^^ between it and common air, confifUne in an augmentation 



a fmall incieale ,• , , r 



of the heat of o« the heat of the lungs. 



the lungs. The fjngular effeds above defcribed, can, therefore, and 



ought only to be afcribed to the gafeous oxide of azote. 

 Other experi- Another meeting of the fociety was held for repeating the 

 Kients. experiments more at large, on the refpiration of gafeous oxide 



of azote, 

 jy^f . . ^ Eight he6togrammes (27 y oz. troy) of nitrale of ammonia, 

 the apparatus prepared as before, were pat into a retort, with its neck fitted 

 wth upwards of j^ ^ double-bodied receiver, from whence, by means of a 

 2lbs. of the fait. ,^, , J... .,^, 



tube of welter, the gas pafled into an mverted veflel over 



water. The retort was placed on a fand-bath. 

 Particulars of "^^ ^^^^ ^^ *'^^ ^'^^'- a^cfted the retort, the fait melted; and 



the procefs. nearly at the fame moment, fparkling vapours arofe in the re- 

 tort, but in very fmall quantity. The air which the heat ex* 

 pelled from the veflels had a nitrous odour ; but this as well as 

 the vapours gradually diminifhed, and as tiie procefs continued 

 they dilappeared altogether; they were fucceeded by a lively 

 finell of pruffic acid. At length the retort became filled with 

 while vapours^ and the gafeous oxide of azote began to pafs 

 over. The difengagement foon became fo abundant that it 

 was judged proper to draw out the fire; but afterwards, on 

 replacing the coals, the gas, which in the interval had dimi- 

 nifhed^ 



