XVI
THE BLOOD TEST
We arrived late at night, or rather in the morning, but in spite
of the late hour Kennedy was up early urging me to help him carry
the stuff over to Cushing's laboratory. By the middle of the
morning he was ready and had me scouring about town collecting his
audience, which consisted of the Winslows, Borland and Lathrop,
Dr. Howe, Dr. Harris, Strong and myself. The laboratory was
darkened and Kennedy took his place beside an electric moving
picture apparatus.
The first picture was different from anything any of us had ever
seen on a screen before. It seemed to be a mass of little dancing
globules. "This," explained Kennedy, "is what you would call an
educational moving picture, I suppose. It shows normal blood
corpuscles as they are in motion in the blood of a healthy man.
Those little round cells are the red corpuscles and the larger
irregular cells are the white corpuscles."
He stopped the film. The next picture was a sort of enlarged and
elongated house fly, apparently, of sombre grey color, with a
narrow body, thick proboscis and wings that overlapped like the
blades of a pair of shears.
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