ow 
This Is The Answer: 
(€ A cow needs TWICE 
the WEIGHT of pure 
air that she needs of 
FOOD and WATER 
combined! ” 
Pile up two days 5 rations 
of hay and silage and grain; 
beside it put all the pails of 
water a cow will usually drink 
in two days and two nights. 
The WEIGHT of that feed and 
water equals the weight of fresh 
air a cow requires during 24 hours. 
If the stable were air tight and 
no fresh air brought in, the cow 
would die, just as a fire choked VA\/, 
with ashes would soon die, though 
it be supplied with coal or wood. 
Of course, no stable is air tight; 
but in the colder states, most stables 
are built as tight as possible, tc 
insure warmth. 
Unless sufficient ventilation is 
provided, this means that the cows 
will not get enough fresh air. • 
Some Fresh Air Not Enough 
They will get some fresh air, 
and so do not die; but they get too 
little fresh air, hence their vitality 
is lowered and diseases such as 
tuberculosis may get started. 
Health is affected and expensive 
feeds given them are not properly 
assimilated; the milk yield falls. 
But how bring in plenty of fresh 
air and yet have warmth ? 
Prof. King of Madison, Wis., to 
a great degree solved that problem. 
Mr. James and his associates, be¬ 
cause of many years’ experience in 
solving ventilation problems, have 
developed improvements. 
James Ventilators and Registers, 
with the free James plans for con¬ 
structing a ventilation system, en¬ 
able any farmer to have fresh, pure 
air, not too cold, in the barn. 
Get Rid of Excess Moisture 
Thirty cows will load the stable air with 
one and one-third barrels of water daily. 
If that amount of moisture is permitted 
to stay in the barn, harmful results will 
follow. It is this excess moisture that 
causes the disagreeable “steaming” so 
noticeable in many barns on cold days. 
“Steaming” is a sure sign that moisture 
is excessive and that the air in the stable 
is not being changed with sufficient fre- 
cuency to keep it fresh and pure. 
James System removes excess moisture. 
Help pull the foul air out; 
help bring the fresh air in to 
the cows; and aid in pre¬ 
venting excessive moisture. 
Actual tests by a compe¬ 
tent engineer have shown that 
the James Ventilator (with 
revolving hood) gives 65 per 
cent better ventilation than 
the usual wooden cupola; and 
30 per cent better ventilation 
than the ordinary ventilator 
for dairy barns. 
This superiority is due to 
three James Principles: 
(1) Construction that offers 
the least possible hindrance 
to outward flow of air. 
(2) Design that permits an 
increased outlet space for out¬ 
flowing air; and — 
(3) The application of ad¬ 
ditional suction at the 
proper point, helping to 
pull the foul air out. 
Is Your Barn “Steamy ?” 
How about your bam? Is it “steamy?” 
Is it full of foul odors? Are your cows 
losing in health for lack of fresh air? Is 
impure air cutting down your milk yields? 
These are intensely practical questions. 
To make milk requires feed, water and 
pure air. Why buy expensive feeds and 
not provide plenty of water and fresh 
air -— water and air 
are free. 
If you are interested 
in this subject of ven¬ 
tilation, write for our 
book, “The James¬ 
way”; and ask for the 
free help of our serv¬ 
ice men whohavehad 
sc much practical ex¬ 
perience in solving 
ventilation and other 
bam problems. ' 
Water For The Cows 
Those who realize how greatly milk flow 
is increased by use of James Drinking Cups 
are reaping huge profits on their investment. 
Reports based on milk records of 28 herds 
(739 cows) show an average increase of 
2.45 lbs. per cow per day. 
This is 490 lbs. in 200 days, which at 
$3.30 per cwt totals $17.15. 
The same investigation showed a saving 
in labor of $2.50 and in fuel of 55c per cow 
during the season. 
“The Jamesway” book gives full infor¬ 
mation regarding drinking cups. 
Work-Saving Devices 
There are many other James devices 
that save labor, increase milk yields, help 
sanitation and improve cow health, such 
as Cow, Calf«and Bull Pens, Feed Mang¬ 
ers, Calf Pail Holders, Sure-Stop Swinging 
Post, Swinging Cranes, “Safety First” 
BuU Staff, Handy Milk Stools, etc. 
Also equipment for the hog barn, horse 
barn and beef barn. 
The James Way Sunny Hog Barn pro¬ 
vides sunshine and sun warmth on the 
floor of every pen two-thirds of the sun¬ 
lit hours. The James Hog Barn Book, 
sent on request, tells all about it. 
Free Dairy Barn Book 
The 336 page book—“The Jamesway”— 
tells all about James inventions that save 
so much of labor, prevent spread of dis¬ 
ease, promote better cow health, protect 
against dangerous bulls, make simpler the 
JamesMfg Co., c Jt^tkimon%&is..(Slmira,^J?..CWinneapolis.jHimi. 
Labor Saving* Equipment for the Dairy 
way 
he Dairv Dam 
care of calves and sick cows and increase 
milk yields. 
Easy Installation 
It explains the easy way of putting up 
carriers, setting up stalls and pens and 
attaching drinking cups. 
Skilled help is not required, because of 
the ingenious James Anchors and because 
the equipment is assembled at the factory. 
Barn Plan Service 
It tells about James Barn Plan Service; 
the many James barn experts who are at 
your service—men who know what has 
been successful and what has not; what 
not to do as well as what to do in planning 
convenient, money-saving barns. 
Their advice on barn planning, venti¬ 
lation and other barn 
problems is free, with 
no charge for floor 
plans. Send for the 
book — a postal card 
request will bring it— 
get the full details of 
how to build a barn, 
how to ventilate a 
barn, hoW to cut the 
barn work in half, how 
to make more milk— 
and more money. 
