Barron can read it. There are five waves
to each heart-beat, which he letters P, Q, R, S, and T, two below
and three above a base line on the film. They have all been found
to represent a contraction of a certain portion of the heart. Any
change of the height, width, or time of any one of those lines
shows that there is some defect or change in the contraction of
that part of the heart. Thus Dr. Barron, who has studied this
thing carefully, can tell infallibly not only disease but
emotion."
It seemed as if no one dared look at his neighbour, as if all were
trying vainly to control the beating of their own hearts.
"Now," concluded Kennedy solemnly as if to force the last secret
from the wildly beating heart of some one in the room, "it is my
belief that the person who had access to the operating-room of the
Novella was a person whose nerves were run down, and in addition
to any other treatment that person was familiar with the ether
phosphore. This person knew Miss Blaisdell well, saw her there,
knew she was there for the purpose of frustrating that person's
own dearest hopes.
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