Here are two more photos of the ivory or horn artifacts posted earlier.
One shows the two separate objects, one above the other in order to show
what a single complete piece would look like. The second picture shows the
round end where an iron screw would have been. The threads are clearly
visible under the microscope. A quick check of violin and fiddle bow parts
seems to rule that out as a possibility, although that was a good thought.
Haven't ruled out dolls' legs, but it doesn't much look like that. It
appears that the foot end may have been used for clamping, but not sure for
what purpose. Thanks again for looking and for all of your thoughts to
date. Will be checking the book you recommended, Mary.
http://www.poplarforest.org/artifactID/Pic4.jpg and
http://www.poplarforest.org/artifactID/Pic5.jpg