316 
Mr. Bowlker on the crossing of the 
Guernsey and Holstein-Friesian breeds 
of cattle. The results as analyzed by 
Castle” show that the milk yield for 
31 F, heifers resembled that of the 
Holstein-Friesian parents 1.88 times 
as closely as it did the Guernsey par- 
ents in the first lactation. In the sec- 
ond lactation the resemblance of the 
milk yield of the F, crossbreds was 3.78 
times as close to the Holstein-Friesian 
parents as it was to the Guernsey par- 
ents. Unfortunately these records are 
subject to some criticism perhaps the 
most serious of which is the fact that 
all records of a given group, parents or 
crossbreds, are lumped together and 
the average used instead of being sub- 
ject to individual analysis. Such a 
10 Castle, W. E. 1919. 
Cattle. In Proc. Nat. Acad., 
The Journal of Heredity 
lumping together would hide such re- 
sults as that of the mating for Cross- 
bred No. 1. Another criticism of more 
or less serious nature comes in the 
throwing together of milk records of 
animals of quite different ages without 
applying age corrections. Considering 
these disturbing features the results are 
on the whole quite similar to those 
presented in this paper. 
In the light of these all too meager 
data the results of this paper would 
seem to be supported by those of the 
other investigations on this subject. 
Such being the case the conclusion 
seems sound that the inheritance of 
milk yield appears to show a partial 
dominance of the high milk yield to the 
low milk yield. 
Inheritance of Quantity and Quality of Milk Production in Dairy 
Vol. 5, pp. 428-434. 
OUR MOST SIGNIFICANT CROPS—OUR BOYS AND GIRLS 
“War throws a spotlight of convine- 
ing clearness upon national defects. 
We are beginning to suspect, if 
not to fully realize, that even more 
essential and fundamental to the integ- 
rity and permanency of a nation than 
scientific progress, political achieve- 
ment, industrial development and eco- 
nomic accomplishment, are biologic 
soundness and fitness, the health of the 
people. 
“This national asset, health, while 
the most essential, is at the present 
time the most endangered of all our 
natural resources. 
“Shall we not provide as thorough 
and effective health care and physical 
education for the children of our coun- 
try as we furnish for the young men 
in the army and navy?” 
“What about the basic needs of the 
great draft army of the nation’s chil- 
dren who must supply the human 
units of the citizenry of the next genera- 
tion; who must bear the burden of 
civilization in peace and in war? What 
shall we do about the neglect of the 
children who hold the future of civili- 
zation in their immature lives?” 
“The children of our country deserve 
as effective physical care as the live- 
stock. 
“The children are entitled, even in 
war times, to as careful attention and 
cultivation as the crops.” 
“Shall not the children, drafted by 
compulsory education into our schools, 
be assured of as skillful and satisfactory 
care as the soldiers in camp?” 
“T wish you appreciated the children 
and youth of this republic. They 
make up, in possibilities, the finest 
generation of human beings the world 
has ever seen. They make you feel 
that even more than the great museums 
and monuments, more than great indus- 
trial plants and ships, more than great 
skyscrapers and cathedrals, they should 
be guarded and protected, cultivated 
and developed for America—for the 
World.”’—From an address by Thomas 
D. Wood, M.D., Columbia University, 
New York. 
