<if fupplying Diving-lells with frejh Air. 1 1 



lie could fee a good way down in tfie water. Having refted 

 a few minutesj and matters being arranged more fatisfaftorily, 

 he was lowered gradually, and remained ftationary about a 

 minute at each fathom's depth ; the fyringe fupplying fuch a 

 conflant ftream of air^ that the bell was fupercharged, and 

 the fignal of fafficiency was often repeated. Having been 

 more than half an hour down, and for fome time on the deck 

 of the fimken velTel, he gave the lignal for afcending, and 

 was drawn up in the fame gradual manner in which he had 

 been let down. 



He faid, that the very infant the mouth of the bell was 

 immerfed a noife (truck his ears, which vvent off upon his 

 refting at the diftance of a fathom from the furface : the next 

 defcent caufed the fame deafening fenfation, the removal of 

 which was efteiled, to a confiderable degree, by repeated 

 yawnings. No inconvenience was felt by his refpiring air 

 condenfed by the preffure of fix or feven fathoiiis water. A 

 flight giddinefs remained a few minutes after his emerging, 

 and the blood-veffelo about his face were a little fwoilen. 



In the night, the killings having given way at high water, 

 one of the rings through which the cables paflTed Icll to the 

 bottom. On the following day he defcended, in a gradual 

 manner as before, to the depth of fevcn fathoms, in order to 

 raife the ring, and remained below for an hour and fome 

 minutes. Not the fmalleft inconvenience wiis felt in his 

 breathing. After coming up he coughed, and a (light tinge 

 of blood appeared in his fpittle. The fullnefs in his face, as 

 alfo the giddinefs, occurred as in the iaft experiment. lu 

 this the bell did not appear to admJt fp much light as in the 

 former experiment, although the papers explanatory of the 

 communication of fignals bv pulling the ropes (which, for 

 precaution, were fixed to the infide of the bell) were dill Ip- 

 gible. With the fyririge one man fupplied I'even gallons of 

 air in a minute, and, if neceflTary, could have fupplied double 

 that quantity. 



The following morning the wind rofe to fuch a degree as 

 to break both the cables and chains that were attached to the 

 funken fiiip, and of courfe interrupted the profecution of 

 further experiments ; which, liowever, at a future period, 

 Mr. Healy hopes to rtTnme. It is to be v.ifiied that ythcr 

 adventurers will make fimilar attempts, and improve on the 

 bint which this trial atlbrds ; for, to uftf the words of Seneca, 



Patct omnibus ars, npndum eft occupata, mulJutti ex illx etiam fuiuris 

 celi^utn cli. 



III. On 



