[Bonetools] Beading on comb teeth
Alice Choyke
h13017cho at iif.hu
Thu Oct 22 19:28:40 CEST 2009
Yes, but how often do you see a comb that was used by an entire family daily
for almost 40 years?
A.
On Thu, Oct 22, 2009 at 6:03 PM, S O'Connor <S.Oconnor at bradford.ac.uk>wrote:
> Thanks Alice. As Anne says, the wear on the horn comb teeth is at a
> different location. Your pictures of bone, antler and ivory comb tooth wear
> are more what I am used to seeing. Marloes has had lots of horn combs and I
> don’t remember wear down at the bottom of the teeth like that on hers
> (please do correct me Marloes if I am wrong), so perhaps the way the comb is
> being used here is an important factor.
>
>
>
> Sonia
>
>
>
> [image: So ne ya]Dr Sonia O'Connor FSA FIIC ACR
>
> Archaeological Sciences
>
> Division of AGES, University of Bradford
>
> Bradford, West Yorkshire, BD7 1DP
>
> UK.
>
>
>
> tel 01274 23 6498 (office) 5210 (lab)
>
> fax 01274 23 5190
>
>
>
>
>
> *From:* bonetools-bounces at listserv.niif.hu [mailto:
> bonetools-bounces at listserv.niif.hu] *On Behalf Of *Alice Choyke
> *Sent:* 22 October 2009 14:40
> *To:* Mailing list for archaeologists of the research group for the study
> of object and waste of bone, antler. ivory and horn.
>
> *Subject:* Re: [Bonetools] Beading on comb teeth
>
>
>
> Dear Sonia and other comb enthusiasts,
> I am sending images of a VERY worn ivory comb from Visegrad that I
> suspect was used frist by a Hungagarian owner and then for genration by the
> 'new' Ottoman owners. Thee is als oan example of wear on a 15 year old bone
> comb that used to belon to a friend of mine who used it everyday, twice a
> day with long hair, a less used but still quite worn ivory late medieval
> comb from Buda and a quite worn antler comb from a AD 3rd c. Sarmation
> settlement. Enjoy!
>
> Alice
>
> On Thu, Oct 22, 2009 at 11:16 AM, S O'Connor <S.Oconnor at bradford.ac.uk>
> wrote:
>
> Dear All,
>
>
>
> I must add that all these materials, will probably wear at different
> rates. Also the detailed form of the wear will probably vary between these
> materials, as the pattern of this should reflect a combination of the
> function of the comb, the material of the comb and the structure of that
> material.
>
>
>
> Horn is formed from layers (visible in Alice’s photo) of finely corrugated
> sheets of mineral stiffened keratin protein. Working of the surface of the
> comb exposes these layers at the sides and edges of the teeth. If these
> layers wear at different rates (perhaps due to differences in mineralisation
> or organisation of the protein matrix) this will produce slight grooves in
> the surfaces of the comb teeth were the more readily worn layers are
> exposed. Once these grooves are formed the hair will catch in them,
> increasing the wear at these points. As the grooves get more pronounced
> more fibres will get funnelled into them as the comb is pulled thought the
> hair, increasing the wear still further at these points (even into more
> resistant layers of the horn) eventually causing the ‘beading’.
>
>
>
> Bone and antler are more heavily mineralised than horn, their organic
> component is collagen rather than keratin, and their structures are entirely
> different to horn. In addition, the physical properties and structure of
> bone compact tissue are different to those of antler. So although the
> mechanism of wear (abrasion by hair/grease/dirt combination) is the same,
> the ‘necking’ or ‘beading’ produced should be different in detail in these
> different materials. Has anyone observed this or done any experimental work
> in this area?
>
>
>
> Sonia
>
>
>
>
>
> Dr Sonia O'Connor FSA FIIC ACR
>
> Archaeological Sciences
>
> Division of AGES, University of Bradford
>
> Bradford, West Yorkshire, BD7 1DP
>
> UK.
>
>
>
> tel 01274 23 6498 (office) 5210 (lab)
>
> fax 01274 23 5190
>
>
>
>
>
> *From:* bonetools-bounces at listserv.niif.hu [mailto:
> bonetools-bounces at listserv.niif.hu] *On Behalf Of *Alice Choyke
> *Sent:* 21 October 2009 21:53
> *To:* tonya.largy at verizon.net; Mailing list for archaeologists of the
> research group for the study of object and waste of bone, antler. ivory and
> horn.
> *Subject:* Re: [Bonetools] Beading on comb teeth
>
>
>
> For example - this is a horn comb from the romanian village of Szek which
> was in use by a family daily for around 40 years.
>
> Alice
>
> On Wed, Oct 21, 2009 at 6:59 PM, Tonya Largy <tonya.largy at verizon.net>
> wrote:
>
> Could someone send a photo of a comb with "beading" on the teeth? This is
> a new concept to me.
>
> Thank you,
>
> Tonya Largy
>
> Alice Choyke wrote:
>
> One thingI can say that the notching or beading on bone/antler/horn/ivory
> combs seems to start seriously developing after ten years. I have an example
> of daily use by a single individual (I will send you my comb article) with
> long hair who used the comb (bone) primarily to clean her hair of grit after
> a day in the fields. Her family had another comb (this one of horn) which
> was used for similar purposes by everyone in the family for about 20 years
> and then by the mother alone for another 20 before being put away. That one
> has very pronounced 'beading' on it. I think the lesson to draw is that
> specialists have seriously underestimated the length of time such objects
> were used in the past. If I forget to send my article remind me.
> Best,
> Alice
>
> On Wed, Oct 21, 2009 at 12:57 PM, Anne Brundle <Anne.brundle at orkney.gov.uk<mailto:
> Anne.brundle at orkney.gov.uk>> wrote:
>
> Does anyone on the list know of any studies of how quickly the
> teeth of bone or antler toilet combs may become beaded? And might
> the way hair was treated make a difference to the extent of wear?
> Sorry if this is a perennial question, I only just joined!
>
>
> Thanks
>
> Anne
>
>
> Anne Brundle
>
> Curator of Archaeology
>
> The Orkney Museum
>
>
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