{ TI97 ) 
have already said that the oscillation-curves do not teach us anything 
about the Aw. 
Before continuing we must call the attention to the fact that one 
should take care not to be deceived by the expansion of the air in 
the plethysmograph by warmth. Whoever is conversant with the 
method sees immediately, what is the consequence of the air in the 
plethysmograph becoming gradually warm, and what must be attri- 
buted to the pulse-wave entering into the arm. Moreover one can 
easily introduce into the plethysmograph air that has been previously 
warmed, or wait till the air in it has obtained a constant degree of 
warmth. The latter method takes time, but this is rather an advan- 
tage than a disadvantage. Every first determination of the Bp what- 
ever instrument may be used, gives, on account of psyehical influ- 
ences, too high figures. and only the subsequent determinations, when 
the patient is no longer afraid of the instrument give constant figures. 
Consequently there is no objection to making a first determination 
whilst the air is becoming warm, by which the patient overcomes 
his fear of the instrument and the operator gets orientated. 
It is with Sp-apparatuses as with thermometers. The so-called 
thermometers “à la minute” must just as well lie 10 minutes in the 
axilla as the ordinary ones, because the axilla has not assumed the 
warmth of the body before that time. So neither quick determinations 
of the Ap can be made, because the patient must first overcome 
his fear of the instrument. If once the patient is familiar with the 
instrument then, the next day or a following time, the. first deter- 
mination is more reliable. 
IL ResuLts OBTAINED. 
Up till now we made on various persons 172 determinations in 
all, 40 of these were taken at nephritis, 4 at insufficientia aortae, 3 
at arterio-sclerosis, 1 at the disease of STOKES—- ADAM, and the rest 
at tub. pulm., anaemia, arthritis, nervosism and normal individuals. 
It is impossible and unnecessary to give all these figures here. We 
shall only select a few at random. 
So of our example the figures were : 
1. J.P.V.27 years (norm) MBp + Aw. 155 140 137-137 
MBp 145 129 128 125 
Be. SLO ER 0. 12 
mBp Aw. 75 75 «Tb Tô 
The third row of figures belongs then to curve I, 
