442 



EXPERUIENTS BY 31. PAUL BERT. 



APPENDIX. 



continued for an hour or two at a pressure of 248 mm., he would have met 

 with the same fate as his pupils. I contend that no certain conclusions can 

 be drawn, in regard to this subject, as to the effects which will be produced 

 in hours from experiments extending over minutes. 



Although it has been pointed out that the artificial inhalation of oxygen 

 was not found necessary at the pressures which are dealt with in this volume, 

 I by no means decry its use, or entertain the opinion that it is undesirable. 

 Mischief is unlikely to result from any quantity that a mountain-traveller 

 Avill be able to imbibe, but it will always be found difficult to take such an 

 amount as can yield substantial benefit. The most that can be expected 

 from its employment is that it may " mitigate the distressing symptoms," or, 

 possibly, slightly retard their appearance. And, although differing from the 

 conclusions drawn by M. Bert, I take this opportunity to express admiration 

 for the courage and perseverance with which he prosecuted his experiments ; 

 and terminate this inadequate reference to his labours by recommending 

 La JPression Barometrique as a storehouse of interesting facts. 



CHIMBORAZO, FROM GUAYAQUIL, 



