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294 
The RURAL NEW-YORKER 
Cattle Lice; Raw Linseed Oil 
February 15, 1919 
j^cwn£A^ 
CREAM SEPARATOR 
If you have any use for a cream separator, it’s only a 
question of time before you buy a De Laval. 
Many buy a De Laval to start with and so avoid a 
lot of “separator grief.” 
Others buy one, two or three different machines 
before they finally learn by experience that ‘‘the best is 
the cheapest” and get a De Laval. 
That’s why, in the older dairy sections where sep¬ 
arators have been in general use for many years, you’ll 
find most of the machines are De Lavals. 
“Claims” don’t mean much to such farmers. They’ve 
had lots of separator experience. “Performance” means 
a thousand times more to them than claims. 
They've watched the De Laval “perform” for several 
decades. They know that it is reliable and they stick 
to it, just as does the creamery man 
who is also “separator wise.” 
Why not be guided by the experi¬ 
ence of these men and buy your De 
Laval “Sooner” instead of ‘Later?” 
Order your DaLartl now and let it begin wr¬ 
ing cream for you right away- See the local 
De Laval agent, or, if you don’t know him, 
write to the nearest De Laval office as below. 
The De Laval Separator Co. 
165 Broadway 29 E. Madison St. 
New York Chicago 
OVER 2,325,000 DE LAVALS IN DAILY USE 
USE NATCO DRAIN TILE 
Farm drainage demands durable tile. Our drain tile are made of the 
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r Sold in carload lots. We are also manufacturers of the famous 
NATCO Silo, NATCO Corn Crib, NATCO Building Tile and NATCO 
Sewer Pipe. Send for the new editio i ofourbook,"Natcoon theFarm". 
National Fire Proofing Company, 1121 Fullton Building, Pittsburgh, Pa. 
Bull Brand Dairy Ration 
i$ guaranteed to makegood. 
WfiAUl N 
s 
The Formula By Experts 
“BULL BRAND”is not anaccidental 
combination of ingredients but the 
result of study, experimenting and 
testing in co-operation with State 
agricultural department heads, practical 
farmers and herdsmen of large stables to de¬ 
termine the best milk producing qualities. 
Its Analysis and Ingredients 
2\% Protein—6% Fat—only 12% fibre. 
Made from dried brewers grains, old 
Try “BULL BRAND” DAIRY RATION, we 
take all the risk—if after feeding it to three 
or more cows according to directions you 
are not satisfied that it will increase your 
milk production, improve the quality, 
lower your feeding cost and keep your 
cows in better condition your dealer will 
refund your money for the feed used. 
process oil meal, corn gluten feed, 
cocoanut meal, barley middlings, 
wheat bran and wheat middlings. 
A Feed You Can Get All Winter 
Every reader of the “Rural New- 
Yorker" can get “BULL BRAND” DAIRY 
RATION promptly all Winter owing to 
our ideal shipping location, Buffalo, N. Y., 
which means no congested terminals and no 
embargos which Western shippers are up 
against. Start feeding “BULLBRAND” and 
stick to it if you want an uninterrupted 
maximum flow of milk all winter. If your 
dealer ie unable to supply you, write us . 
Maritime Trading Corporation, Buffalo 
Prof. ft. II. Lamson of Connecticut 
Agricultural College has gathered some of 
the most valuable data on this subject of 
cattle lice, and I think that a summary 
of his finding should be in the library of 
every cattle owner. There are two gen¬ 
eral orders of cattle lice, those which 
feed on the dry skin and hair and those 
which suck the blood of the animal. The 
latter is, of course, the more injurious. 
The idea that lice develop spontaneously 
from dirt and filth is erroneous. The 
condition of the stables affects the spread 
and multiplicity of lice to a certain de¬ 
gree, but the fundamental causes of in¬ 
festation is the condition of the stock. 
As all cattlemen know, the lice are not 
evenly distributed over the body. In fact., , 
a large part of the body is usually prac- i 
tically free. The upper portion of the 
neck, withers, forehead, space between 
cud around base of the horns, the throat 
and the escutcheon, together with the 
switch of the tail, are the portions of 
worst infestation. These are the places 
for applying the remedy. 
It can almost bo stated as a fact, that 
during no time of the year are cattle en¬ 
tirely free from lice, but the infestation is 
a its height during January and Febru¬ 
ary. This is due to the fact that the oily 
skin secretions gradually diminish during 
the cold weather There are two kinds of 
sucking lice on cattle, the short-nosed 
and the long-nosed cattle lice. The sliort- 
nosed louse is most commonly found on 
mature stock, lint occasionally on calves. 
It can lie detected frequently by the fact 
that the hair has been rubbed off the 
neck and shoulders, leaving them some¬ 
times sore and bleeding, by stock trying 
to rid themselves of the tormentors. The 
long-nosed louse, or “blue louse,” attacks 
calves principally. There is hut one kind 
of biting lice on cattle, the little red cattle 
lice. They are perhaps the most generally 
found of all, and without difficulty can 
be distinguished from the sucking lice by 
the shape of the head. The biting bead is 
broad, short and blunt; the sucking head 
is narrow, long and pointed. 
There have been 11 methods of control 
proposed and used with limited degrees of 
success. A control to be practical must be 
cheap, easy to apply, effective in killing or 
driving away the lice, and at the same 
time doing no injury to the animal. Most 
of these 11 methods are lacking in some 
respects, most are flavored too much with 
college theory to appeal to the practical, 
conservative stockman. Pi’of. Lamson 
does not claim to have made a discovery 
of a new control. lie explored the old 
methods and came to the decision that the 
simplest, most neglected and least prac¬ 
ticed, for some unknown reason, was the 
best. He saw that, lice were most plenti¬ 
ful on cows at the time the oily secretions 
were the least. He saw that cattle, such 
as the Jerseys, with very oily skins, were 
not so badly infested as the Holsteins, 
with their dry skins. Therefore lie de¬ 
cided that an oiling method was the best 
control measure. 
Raw linseed oil has been proven to he 
the best control measure from the stand¬ 
point of killing the lice with the least 
labor, smallest cost, and, at the same 
time, with no injury to the cow’s skin or 
to her digestive tract if she should hap¬ 
pen to get some internally. It can best 
he applied with a coarse brush., having 
bristles of unequal length. The rice fiber 
brushes are recommended. From four to 
five head can be treated with a pint of oil, 
which would make the cost about five 
cents a cow. It takes about five minutes 
to apply tin* oil. Treatment should begin i 
early, within a week after the hero is ' 
brought in the barn for the Winter. A I 
second application must follow in 12 or 
13 days. These applications are far 
enough apart to give all three species of 
lice time to hatch from any eggs that may 
be on the stock at the time they are 
brought in, but they are not so far apart 
that another batch of eggs can be laid. 
After the first two, a treatment should 
he given once a month. Five or six treat¬ 
ments ought to control the lice in an av¬ 
erage herd. In case an outbreak should 
occur, however, apply the oil every 12 or 
13 days until subdued. From l’x’of. Lam- 
son’s data, n few “Dont’s” can be given 
for the use of the oil: 
1. Don’t rub the skin too vigorously. 
2. Don’t allow the animals to go out in 
the direct sunlight until 12 hours after 
treatment. 
3. Don’t exercise animals after treat¬ 
ment. 
4. Don’t use boiled or refined linseed 
oil: use the raw oil only. 
5. Don’t cover animals after treat¬ 
ment. 
Cattlemen, rid your cows of lice, make 
them comfortable and happy. Then watch 
your herd improve and your profits grow. 
The best time to make the treatment is 
at grooming. Then two operations can be 
done at once. The brush should be fairly 
well moistened with the oil, but not satu¬ 
rated, as this only causes waste. First 
rub over the parts most likely to be the 
worst infested, i, e., the upper portions of 
the neck, withers, forehead between the 
horns, the throat, the escutcheon and the 
switch of the tail. The brush will still 
contain a considerable amount of oil and 
should be run quickly over the entire 
body to get any strays of the family of 
little red lice. If one is in a hurry the 
body of the animal may he slighted, hut 
one cannot afford to he superficial in the 
treatment of the principal points of infes¬ 
tation. G. OTIS HUTCHISON. 
Connecticut Agricultural College. 
Flush Cows After Calving 
Protect your herd against Contagious 
Abortion and Barrenness. 
Barrenness or Sterility, like Abortion! 
Retention of After-birth and Premature 
Birth, is nearly always caused by infection of 
the reproductive organs by the germs of 
Contagious Abortion. Unless this infection 
is promptly overcome by the use cf a powerful 
but safe antiseptic, it may permanently 
affect the reproductive organs so that the 
cow will continually fail to stick. 
Every time a cow drops a calf—whether 
alive or dead—by premature birth or abort¬ 
ing, whether the after-birth is retained or 
not! her reproductive organs should be 
flushed out, Localise that 13 where the in¬ 
fection is developing. | 
B-K; the powerful^ non-poisonous anti¬ 
septic, is scientifically correct for this work. 
Used as a douche for the uterus, it quickly 
brings the after-birth; dissolves the slimy 
albuminous matter, kills the germs, stops 
discharges and controls the infection. B-K 
docs not cause straining, but is soothing and 
heals the tissues. 
Send for “evidence” and free Bulletin No. 
£2 “Contagious Abortion.” If your tlualc*: 
docs not have B- K scud us his name 
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The Rural New-Yorker 
333 W. 30th St., New York 
