Evening public ledger. [volume] (Philadelphia [Pa.]) 1914-1942, 1917-04-13
SAVANT ADVOCATES
IMMIGRATION CHECK
Dr.. Davenport Warns Philo-
sophical Society Against Too
Great Infusion of Foreign
Blood

The hope of America in the generations
to come lies in the restriction of mmigra-
ton and the practice Of cugcnics, accord
ing to Dr. charles r.. Davenport director
Of the station for Experimental Evolution
Mt cold Spring Ilarbor. L. l.. who read n
paper today before the second days session
Of the general meeting of the American
Philosophical Society IN it's hall in Inde-
pendence Square.
Doctor Davenports subject was THE In
nueuco of the Admixture Of Present Immi-
grafton Races Upon the More original
stock" His concluding remarks were:
This, then. is the hope of our country.
If immigration is restricted. If seective
elimination is permitted, if the eugenical
ideal prevails In mating, then strains with
new and better combinations Of traits may
arise and our nation take front rank with
tho most cultured and powerful Of the ma
tionS OF history
I'm answer to question put Ivy one of
IN" members of the society concerning the
effect Of saving unhealthy lives, Doctor
Davenport said that modern medicine might
do harm If urrestrained in its work of
saving the weak and allowing them to
reproduce their kind.
Doctor Davenport showed that the mix
ture Of different breeds among animals. such
as chickens. does not improve the qualities
of the resulting hybrid and in the same
way, he said, the intermarrying of extreme
types of humans. such as very tail and
very short persons. or those of greatly diff
fering characteristics. tends To produce a
hybridta1tiun that is inferior to either of
/ the parents. Moderate Adjudication, how
ever, he said, sometimes produces new
! strains of higher type thar the old He
| expressed tho opinion that many sections
! rf this buVp already rpppiNpd
! much new mixed blood from Europe, and
! that the resultant type might he far in
| tcrior to the old American type.
! ELIMINATE WORTHLESS ROSTERS
/ The Philosophers were told how to fight
! the high cost of living by the partial elm
! nation of the worthless rooster from their
| backyard chicken focks In paper on the
sex ratio in the common domestic fowl by
| pr. Raymond Pearl. biologist of the Maine
| Agricultural Experiment station at Orono
| Me THE speaker said that the proportion
! of male chicks hatched is less when the
setting of eggs is taken from prolific hen
I'm the present war conditions he said
you will be glad to know that YOU should
breed from heavy layers and produce &
strain in which profit making pullets pre-
ponderate over the cockerels, which only
eat up costly food"
| Although the observation of motion pic
lures for two or more hours causes heav!
II
caused by an equal period of steady read
| ing under much of the artificial lighting
in use nowadays, according to pr. Clarence
r. Ferree professor of psychology at Bryl
Mawr who read a paper on Lighting II
It's Relation to the Eye
ANCIENT SCIENCE AND ART
That astronomers are at last beginning t
see daylight through the vast confusion o
havy speculation which has characterize
the science of astronomy, was the concluo
ing opinion of DR. II. y. Russell. professo
of astronomy at Princeton University, wh
, read a paper THE Relationship
stellar Motions to Absolute Magnitudes
, which had been prepared by Dr..W >. Ao
ans of the Mt Wilson observatory.
Pasadena, Cal. The paper was particular
, hazy to the lay intelligence
The practice of the fine arts by man Wa
begun at least $4,000 years ago accordf
, to r.. S. Balch, of this city. who read
. paper on early Man in America The hn'
ing of the fosSized bones of man in cant
digging in Florida several years ago prove
conclusively. said the speaker, that ma
was living in America in very early ages.