54Exhibit F—G.
F EXHIBITED BY PUBLIC HEALTH DEPARTMENT, CITY
OF LIVERPOOL.
E. W. Hope, M.D., M.O.H.
F 1 One large model of insanitary property dealt with in Liverpool,
built to scale, etc., with glass cover.
F 2 Charts showing the decline in mortality from phthisis :—■
F 2a One showing rate for England and Wales.
F 2b One ., ,, England and Ireland.
F 2c One ,, ,, Scotland.
F 2d One ,, ,, Liverpool.
F 3 _ Six framed and glazed photographs illustrating insanitary property
iV I) C Ci 6 fwhich has been demolished in Liverpool, and the new dwellings which
have been erected to house the dispossessed tenants.
AN EXHIBIT OF A SYSTEM OF MAKING PEDIGREE
RECORDS.
Exhibited by Dr. Raymond Pearl,
Biologist of the Maine Agricultural Experiment Station, Orono,
Maine.
This exhibit consists of a series of blank record forms designed
to illustrate the method of keeping pedigree records which has been
in use at the Maine Agricultural Experiment Station for a period of
five \ears, in connection with its work in the experimental study of
inheritance in poultry and in various plants. The advantages which
have been found by experience to inhere in this system of pedigree
record keeping are (a) simplicity ; (b) ease or operation ; (c) small
chance for error in the keeping of large masses of pedigree records ;
(d) uniformity of the system, such that records of all kinds, in any
way pertaining to the work, may be brought together with great ease
for consultation or study.
In addition to the record blanks there are exhibited also various
marking devices and other apparatus connected with the proper
working of the plan.
It should be noted that while the blanks here exhibited are
devised particularly for work with poultry and plants, the same
system, with slight modifications, may be successfully applied to the
keeping of human pedigree records ; indeed it is a pleasure to state
