376 
used as a dominant; such a factor dif- 
fers quite distinctly from another like 
speck which is consistently recessive. 
Such a parallel will explain the inheri- 
tance for butter-fat percentage by con- 
sidering that the factors for low butter- 
fat percentage display more dominance 
in their expression than do the factors 
for high butter-fat percentage. 
The inheritance of butter-fat per- 
centage has occupied a prominent place 
in the discussions of breeding opera- 
tions by practical dairymen. These 
men have held the following views as to 
the mode of this inheritance. The first 
has claimed that the tendency for high 
or low butter-fat percentage is trans- 
mitted by the sire to his offspring; the 
The Journal of Heredity 
second that the dam transmits the 
tendency for high or low butter-fat per- 
centage to the offspring; and the third 
that both parents contribute to the 
butter-fat percentage transmission. 
The results of these experiments show 
that the third of these claims is correct. 
Such being the case the dairyman who 
wishes his breeding operations to pro- 
gress successfully will find it desirable 
to examine both sides of his animals’ 
pedigrees carefully. Thus, today, the 
Jersey breeder pays a good deal more 
attention to the sires’ side of the pedigree 
than he does the dams’ side of the 
pedigree when in truth both sides are 
equally important. 
REMARKABLE INDORSEMENT OF THE JOURNAL OF HEREDITY BY 
THE CHIEF OF THE BUREAU OF PLANT INDUSTRY 
Dr. Wm. A Taylor is the Chief of the 
largest plant research organization in 
the world—the Bureau of Plant Indus- 
try of the U. S. Department of Agricul- 
ture. Its large staff of trained research 
workers, backed by an extensive cleri- 
cal organization, constitutes the most 
powerful creative force in the study 
of plants which the world has ever seen. 
It expends $2,800,000 a year, which 
would represent an endowment of 
more than twice that of the Carnegie 
Institution. 
This unrivalled body of research 
workers has gathered together thou- 
sands of invaluable photographs which 
tell the story of new discoveries better 
than words do. There has never been 
any adequate way to bring these illus- 
trations before the public, and this year 
the totally inadequate source of publi- 
cation has been cut in two. 
In a similar way, the large army of 
research workers all over the world 
who find that their mediums of publicity 
are being hampered by inadequate facil- 
ities, are looking to the JOURNAL OF 
HEREDITY as the means by which they 
may present their discoveries to the 
interested public. 
Dr. Taylor’s indorsement, printed on 
the opposite page, should appeal to 
everyone interested in the building up 
of our plant and animal industries. The 
production through breeding and selec- 
tion which is actually going on is creat- 
ing for the country hundreds of millions 
in wealth. Increased production, more 
disease resistant plants, longer, tougher 
fibred, better flavored and otherwise 
more valuable tobaccos, cottons, rices, 
wheats, sorghums, corns, peanuts, 
watermelons, peaches, potatoes, oats, 
barleys, flax, blueberries, citrus fruits— 
in fact the whole range of agricultural 
and horticultural plants—are actually 
being effected by the workers in this 
new field of science, and when Dr. 
Taylor says that no other scientific 
journal in America equals the JOURNAL 
oF HEREDITY in respect to its power to 
communicate and preserve the basic in- 
formation relating to plant and animal 
improvement, he speaks from a quarter 
of a century’s intimate experience with 
the conditions as they are. 
The JouRNAL OF HEREDITY has an 
appeal to everyone who wants to see 
the photographs which show the prog- 
ress in this field which is easily and 
rapidly becoming one of the greatest of 
all in its ability to create wealth. 
