the blood-stains with
the paint--a mixture of yellow and brown ochre. Either they were in a
hurry or there had been some interruption, for the job was not half done
and the murderers, leaving behind all the evidences of their atrocious
deed, vacated the cottage for good and all.

THE BLOOD EXAMINED BY EXPERTS.

One of the first things to be determined was whether the blood on the
floor of the cottage and that found in the trunk was identical. Dr.
Brandt and Dr. Hectone were sent for, and for the balance of the day
they were busily engaged in making examinations and microscopic
comparisons. By night they were in a position to declare that two things
had been definitely established. First, that the blood found in the
Carlson cottage was that of a human being, and second, that, so far as
an expert examination by the most approved methods had gone, it went to
prove that the blood taken from the trunk and that taken from the house
came from one and the same body. This feature of the tragedy created the
greatest interest in medical circles, from the fact that it was the
first case on record in which such a comparison had been attempted.

"I examined the blood found in the trunk," said Dr. Brandt on the
evening of the day in question, "soon after it was found and
determined that it was human. The first thing to do was to
determine whether the spots in the house were also human blood."

"How can you tell whether certain blood is that of a human being,
or of some animal?" he was asked.

"Only by the size of the corpuscles. They are large and compressed
on either side. It can be done only by means of a powerful
microscope, and even with this aid none but an expert can tell. By
submitting the blood to this test it was found to be human blood.
This settled, the next thing of importance was to find out if the
two specimens of blood bore any resemblance."

"Can you tell to a certainty whether two drops of blood come from
the same body?"

"You cannot; but if they bear certain marks of resemblance the
inference is pretty strong. You must bear in mind that the blood in
both cases was taken from wood. That found in the trunk was diluted
with water. After diluting the blood taken from the floor of the
house sufficiently to make it of the same consistency, or as near
as may be, with that from the trunk, we submitted them both to the