LIST OF ILLUSTRATIONS 



Page 



Lortet. Respiratory tracing taken at Lyons (200 meters) 112 



Lortet. Respiratory tracing taken at the summit of Mont 



Blanc (4810 meters), after resting an hour 112 



Cupelain: Chamounix (1000 meters) - 113 



Grands-Mulets (3000 meters) at midnight, half an hour before 



starting H3 



Summit of Mont Blanc (4810 meters) 113 



The construction of a bridge pier by the use of caissons 369 



Diver equipped with the Denayrouze regulator, complete suit 391 

 Diver equipped with the Denayrouze regulator, helmet re- 

 moved 392 



Fig. 9. The aerotherapeutic establishment of Dr. Carlo Fornanini at 



Milan 412 



bis. Respiratory modifications in compressed air 423 



Circulatory modifications in compressed air - 424 



Circulatory modifications in compressed air 424 



Circulatory modifications in compressed air 425 



Circulatory modifications in compressed air 425 



Circulatory modifications in compressed air 430 



Apparatus with four plates for experiments on decreased 



pressure 508 



Mercury pump set up for the extraction of the gases of the 



blood 510 



Composition of confined air which has become lethal at pres- 

 sures below one atmosphere 524 



Variations in the tension of the oxygen contained in com- 

 pressed air which has become lethal at various pressures 



less than one atmosphere 527 



Relations between the oxygen tension, duration of life, and 



capacity of vessels 531 



Cylindrical glass apparatus for high pressures (25 atmos- 

 pheres) set up for superoxygenated air 554 



Confined air which has become lethal under pressure 568 



XXIX 



