University of Toronto
Toronto, Canada
Department of Physiology

is the record of Dog 408. The whole
of the large chart is devoted to this dog.
We are also inclosing a copy of our
notes as entered during the experiment.
We hope that the [?] and rough
notes will make all the points sufficiently
clear.
We have had very heavy
casualties among the "duct tied" dogs
during the hot weather and have
now only two survivors in good
health. Until we hear from you
sir we intend to conduct experiments
on two dogs as follows - we will
remove the whole pancreas from
each and place the dogs in [?]
cages - we will treat one dog with
the extract and have the other as a
control. Dr Banting will explain
in his own letter some of the
other problems connected with this
work which we hope to have the
opportunity to attack.
Sincerely yours.
F. G. Banting C.H. Best