Te7rth Communication frcym Dr. Thornton. i '5 



nated air, it created so strong a sense of hunger, that, 

 as she was returning home, she could not retrain from going 

 into a leaker's shop, buying, and eating up directly, two 

 penny rolls. Afterwards she came with a supply of bis-' 

 cuits ; which plan was followed at the same time by some 

 other patients*. 



7. The sea air at Hartlepool kept 7/p the advantages of an 

 ftrtificial inhalation of a superoxygeiiated air. That there 

 is more vital air in sea-air than in-land, has been proved 

 by a very ingenious paper by Dr. Ingenhousz, presented be- 

 fore the Royal Society f. Most of the advantages of going 

 to the sea side arise from this cause J, instead of bathing. 

 How much more easy the expense of artificial inhalation of 

 A superoxvccnated air, if the advantages are the same, than 

 distant journe\'s to those remote from the coast for the re- 

 covery of health ! This idea is worthy of some conside- 

 ration. 



The examination of common air was as follows : 

 The comijion air by piouf was /''o "^ -c 



1 06. - - - I S " sT s •• - 94^ 



After one inspiration, 1-25 Jsjj<^3^^ - 75 



After the second, 137 - \ ■^ V- ^ ^-^ - 63 



After the third, 1*47 - I ^ "I "^ = '^ ' 55 



After the fourth, 1-48 - v^ tcS ^ n ■ 5* 



The haidnei; of the pulse and the difficulty of brmfhivg in Mr. Da%'y, 

 aftrr inhaling the pure vital air, seem tiitn to have arisen from a degree 

 of nijlammat'jry fever having li8;;ii induced ; or by taking backwards and 

 forwards the same air too otten. To a philosophic ir.ind this is no objec- 

 tion ; or that animals are destroyed bv pure vital air, dyiny from an excess 

 of excitement ; for the most potent poisons are the best remedies, when 

 judiciously employed. 



• This effect might be contradicted by future experience on a small 

 •ic^le, espec) illy upon healthy individuals. Let the reader, therefore, be 

 ijcquaintcd, that JVIrs. Lowry at first came to me in a coach, and could 

 not support herself upijjht. She had been given up by the most able 

 practitioners. As strength returned, appetite increased : and this is ever 

 as the wants of the system : after a recovery from a fever everv one muse 

 have experienced the cravings of nature, and her state was soon that of 

 convalescency. So predisposed, it is not to be wondered at if the oxygen 

 produced a tireunistance at which some may smile j and I liave added 

 this note, fearful of a contrary account being hastily published by an ex- 

 periment made upon persons in the vigour of life. 



f This ingenious memoir on the degree of goodness in the air (that is, 

 the pioportion of vital air to a/ote,) as found on the open sea, on the sea 

 side, and at a distance from tlie sea, was read Apr'l 24, i/co; and is 

 published in vol. Ixx. of the Philosophical Transactions. 



I The surpiising cures recorded by Dr. Ciilchiist, and others frorr* 

 li'iig sea voyages, must have partly proceeded from this circumstance. 

 The inrrci.se of appetite in short sea voyage; hiS. Lccn noticed by me 

 Diure than once, and bv others. 



.^» . 3 8. That 



