114 J- Lindhard. 



the whole unexceptionable and the health excellent; the sleep was 

 good. The œdematous swellings disappeared of their own accord 

 in the course of a couple of weeks. The reason for their occurrence 

 may well be sought in the greatly changed conditions of circulation, 

 especially for the lower extremities; sedentary brain-work instead of 

 from morning to night following after a sledge in heavy clothes, 

 an occupation which makes special demands on the muscles of the 

 lower extremities. The greatly increased muscular work means 

 increased flow of blood, and the circulation again is facilitated by 

 the movements. In changing suddenly therefore from the active 

 movement to a continuous rest, an unnatural condition arises, as 

 the circulation requires some time to adapt itself to the new con- 

 ditions. 



The constant running after the sledge also makes demands, 

 however, on the organs of the breast, the lungs and heart. I have 

 made investigations on two strong, well-trained individuals before 

 and after a long sledge-journey; I have no measurements of myself; 

 I have had to be content with stethoscopic examination of the heart 

 and found nothing unusual. As I was in the same condition as the 

 two others, however, and as these in other regards, e. g. weight- 

 curve, were as mentioned above, I may conclude that the changes 

 in the breast measurement, noted for them, would also have been 

 found in myself. In both the vegetative functions were in good 

 order both before and after the journey. A sick condition occurred 

 in the one case during the journey, characterized chiefly by consti- 

 pation and passing tenderness of the gums. This state seems to 

 have come as the result of bad nourishment, raw meat and lack of 

 fat; the symptoms disappeared spontaneously with change of food. 



I may give here the results of the two examinations mentioned 

 above. 



I. P. K. 37 years old. ^'4n 07. 



Stethoscopia pulmonum: thorax well-formed, resp. movements 

 strong, equal; boundary of lung in front at intercostal-space VI, 

 movable; respiration everywhere vesicular without secondary sounds. 

 Boundary of lung on the back at intercostal-space X, with deep 

 inspiration at XI; vesicular breathing without secondary sounds. 



Stethoscopia cordis: cardiac dulness from С III and left margin 

 of sternum to a finger's breadth from the mammillary line where 

 the ictus was felt indistinctly in intercostal-space IV. Sounds at apex 

 clean, strong. At base the first sound somewhat soft, indefinite. 

 Pulse 62, strong, regular. 



Circumference of chest at height of angle of scapula and 

 papilla 



