72 J» Lindhard. 



was made 14 times; the erythrocytes were counted 16 times. Dis- 

 agreement between the measurements for the blood-pressure and the 

 calibre of the arteries was only found twice, '/u and '^/n; in both 

 cases the blood-pressure was higher and in both cases the number 

 of leucocytes follows the calibre of the arteries. In connection with 

 what has been shown before this presumably means, that we are 

 in these cases dealing with such a rapidly appearing and rapidly 

 passing rise in the blood-pressure that it was over before the sample 

 of blood was drawn; compared with the examination on ^^In, 

 described previously, we may perhaps think of psychical causes. 

 For ^''/n only is the disagreement more serious, as the number of 

 leucocytes differs from both the other measurements. On ^'*,'n the 

 number of leucocytes is so very different that comparison with the 

 other measurements is of no account. 



As I have not been able to trace any connection between the 

 pulse rate and the number of leucocytes, the pulse curve has been 

 omitted. 



The next curve is the result of measurements of the blood- 

 pressure and the number of leucocytes in the individual B, the 

 measurements being taken almost every other day at П'ЗО a. m., 

 about 3 hours after the first main meal. The last curve, J, comes 

 from daily measurements immediately after dressing. Here also the 

 curve only refers to the two functions named. 



The above-mentioned parallelism, though recognizable, is not so 

 distinct in these curves as in these first described, the reasons 

 probably being several. In the first place the two individuals exa- 

 mined are in nervous regards not so stable as L. ; in the second 

 place the samples of blood in their cases were drawn from the lobe 

 of the ear, in the first individual from a finger, whilst the blood- 

 pressure in all three cases was measured on the art. radialis. Lastly, 

 it has to be mentioned that the second curve does not come from 

 morning measurements; the irregularities may perhaps in part be 

 ascribed to this circumstance. On the other hand this curve serves 

 to show, that if the mode of life is regular we are not absolutely 

 restricted to morning measurements to obtain results which can be 

 compared. 



As the blood-pressure is in general undoubtedly higher in winter 

 than in summer we should expect to find a corresponding difference 

 in the number of leucocytes; this presumption also receives confir- 

 mation from my material so far as it goes. Enumeration of the 

 different kinds of leucocytes in stained preparations indicates like- 

 wise a change in the relative numbers of the different forms. 



The results of the examination of 43 preparations may be given here. 



