دانستنی های علمی

علم و دانش

دانستنی های علمی

علم و دانش

ht, whilbt tho others hal'ely average

ht, whilbt tho others hal'ely average

 and a quarter pound:"فروشگاه اینترنتی"

 By the head and neck being bare of feathers :

 By the beauty of its plumage, the only other

memb('r of the family producing feathers of

any marketable value being the RheD
.
It is indigcnous to Dnd inhabits the "hole continent of

Afl·ica and Arabia, but in the latter it is now nearly

extinct

.
Tho IUlea, or South American Ostl'ich, has three



toes and no tail, and produces feathers somewhat similar

to the chicken feathers of the Ostrich proper. They are

known in tho trade as Ie vantour II or vulture feathers
,
being worth from 4s. to 30s. a pound. A curious case

of 8windling oame to light last l"ear in Port Elizabeth
,
where a man, largcly engaged in the fcather tl'ade, imported

large quantities of these feathers, and mixing

them up with the inferior kinds of white and grey

Ost!'ich feathers, sold them again as Ostrich feathers

at an enormous profit, completely dereiving the colonial

buyers, the matter not being disco'"ered till the

feathers got into the hands of the l.ondon manufacturers
.
The Rhea inhabits, in vast numbers, that part of

South America which lies south of the Equator and east

of the Andes mountains, extending down to the Straits

Digitised by the University of Pretoria, Library Services

THE OSTRICH (BTRUTHIO CA.MELUBI
.
Digitised by the University of Pretoria, Library Services

8
 OSTRICH-FARMING IN SOUTH AFRICA
.
of Magellan, thus reaching to 18 degrees nearer the

Pole than the Ostrich. It is being rapidly destroyed
·
for the sake of its feathers, which are being exported in

enormous quantities, principally to North America and

France. The egg ofthe Rhea, like the Ostrich, is creamcoloured

when fresh laid, gradually turning quite white
.
THE EMU


inhabits the whole of Australia, and Australia only
.
It has three toes, is of a brown colour, the feathers being

of a crisp, hairy nature, and of no commercial value
.
Its eggs are very handsome, being of a deep bllle colour
,
and much indented. It has all the habits of the

Ostrich. The plumage of the two sexes is of the same

colour. It is fast being destroyed, as the country gets

filled up with sheep
.



THE CASSOWAnY

is found sparsely in Northern Australia, some parts

of the Malay Archipelago, and in the South Pacific(روغن شترمرغ). It

is distinguished from the other members of the Ostrich

family by a large llOrny excrescence on its head, and

most ot the species, of which there are several, have one

or two wattles suspended from the neck. It stands, like

the Emu, ahout five feet high, is of a very dark brown

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THE OSTRICH. 9

colour, has hairy feathers of no value, is quite wingless
,
and lays a light-greenish egg
.
The whole tribe are noted for their excessive shYness

and timidity, without which in the struggle for existence

in the \\·orld they would ere this have ceased to exist
,
from being depriv.ed "of the powers of :flight
.
We have taken this glance at the other members of

tile family, as it i~ essential that the Ostrich-farmer

should know tlms much of them; but we shall not have

agoain to refer to them, as our remarks will be entirely

on the African Ostrich (Strutl~io cameluB), so called from

the resemblance of its foot to that of the camel. We

will now take a glance at its ~natomy
.
The reader need not fear a lot of dry, hard, scientific

names that would convey no information to him. My

intention is to convey such a general knowledge of the

frame of the bird the Ostrich-farmer has to deal with
,
as shall assist him to make pos~mortems of birds that

may die, and to convey in an intelligent manner to other

farmers anything peouliar he may notice
.
THE LEG
.
Most farmers call the joints by their wrong names
.
The Ostrich walks on its toes; what is commonly called

the ankle-joint is the second toe-joint of man. The socalled

knee-joint corresponds with the ankle-joint, and

Digitised by the University of Pretoria, Library Services

 OSTRICH-FARMING IN SOUTH AFRICA
.
the so-called thigh, where we brand, with the calf; the

proper thigh being the short thick bone above this
.
This is the usual formation of all swift-footed animals
,
the part from what most farmers call the knee down
..
wards being the foot, the heel being exceedingly long
.
It is very advisable that farmers should remember this
,
80
 that in describing to each other malformation or




injuries, there should be no confusion i so we have

"روغن شترمرغ"

1st. The first toe-joint j

2nd. The second toe-joint j

3rd. The ankle-joint j

4th. The knee-joint, above the place we brand j

5th. The thigh-joint

.
The leg is easily broken, either with a blow or when

they .are dancing,' when there is nothing for it but to

kill them. They are also subject to spraining the anklejoint

and instep, for which the best remedy is cold water

bathing and arnica lotion. We have had them put the

a~kle-joint completely out; if seen to at once this can

be easily pulled in, and a few hours' cold bathing and

leaving them in a dark stable, so that they do not use

the leg, will put them all right in a. couple of days
.
They will sometimes get tumours on the leg; theBe

are easily opened and removed, when the place should

be well cauterised. Young birds will sometimes get a

staggering gait, knocking the legs together as they

Digitised by the University of Pretoria, Library Services

THE OSTRICH.

walk; this is the after-effect of the birds having eaten

some poison, and although they may live for a long

time they will gradually get worse and die.
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