-57-
I have exa-
examiners deemed me qualified to run individual examinations.
mined about 2000 cases. I have testified as an expert approximately
200-225 times.
The first step is looking at the garment. The first chemical test is a
sceening test. This is significant in the case of a negative reaction.
If 5
the test is positive then there is the possibility that there is blood in
the stains. If blood is in the stains I will identify a particular crystal
under the microscope.
The next step is to determine if the blood is animal or human. If it is
positive then I know I have a human blood stain. Then I test for the blood 10
tyre or blood groupi
The examination was conducted on 9/2/77. I examined each of the items
for blood. I received the items from the Director of the Crime Lab in St.
Thomas.
(Witness is shown EXH V.M. 19)
15
This examination was found to be oüp A human blood
(Witness is shown V.M. 20)
S
of the accused.
This was found to Group A human blood of the accused.
(Witness shown EXH. V.M. 14)
This was found to Group O - human blood of victim.
(Witness is shown V;M. 1)
I identified Group 0 and Group A. human blood.
No human being has 2 types of blood.
20
There are 7 stains that I tested on this pant. There were 4 stains of
Group 0 and 3 stains of Group A.
(Witness is shown V.M. 2)
I identified blood on this but could not determine the origin or whether it
wes animal or human.
(Witness is shown V.M. 4)
25
I found human blood but could not identify the type on the left sneaker
but on the right sneaker the type was Group A.
30
(Witness is shown V.M. 5)
I found human blood but the quantity was insufficient to go further with
the test.