To facilitate the purchase of such a microscope as shall with certainty
prove satisfactory and adequate to its intended use, I am willing to
make the following proposition whereby YOU RUN NO RISK of getting an
unsuitable instrument. The offer is: Order what microscope you like from
this list; use it for one or two months; if then you decide that you
want another one on my list, or a new one of whatever make, order it
from me and return the other one (prepaying expressage) and I will allow
you FULL PRICE PAID.
EDWARD PENNOCK
DEALER IN OPTICAL INSTRUMENTS
3609 Woodland Ave.
Opposite Medical Department, University of Pennsylvania
PHILADELPHIA